[ty] Better error message for attempting to assign to a read-only property

[AlexWaygood]

Summary

The error message we give if somebody attempts to assign to a read-only property is currently not very user-friendly: https://play.ty.dev/599eb199-504a-4fff-8ee9-585880838b5e. But this is a common error that is worth special casing so that we present a better error message. #19936 (my work-in-progress PR for @property protocol members) also threatens to make this error message more prominent in some situations, so it seems worth cleaning it up now.

Test Plan

Mdtests

[github-actions]

Diagnostic diff on typing conformance tests

Changes were detected when running ty on typing conformance tests

--- old-output.txt	2025-08-29 13:20:05.597538888 +0000
+++ new-output.txt	2025-08-29 13:20:08.233544852 +0000
@@ -670,7 +670,7 @@
 namedtuples_type_compat.py:23:1: error[invalid-assignment] Object of type `Point` is not assignable to `tuple[int, str, str]`
 namedtuples_usage.py:34:7: error[index-out-of-bounds] Index 3 is out of bounds for tuple `Point` with length 3
 namedtuples_usage.py:35:7: error[index-out-of-bounds] Index -4 is out of bounds for tuple `Point` with length 3
-namedtuples_usage.py:40:1: error[invalid-assignment] Invalid assignment to data descriptor attribute `x` on type `Point` with custom `__set__` method
+namedtuples_usage.py:40:1: error[invalid-assignment] Cannot assign to read-only property `x` on object of type `Point`
 namedtuples_usage.py:41:1: error[invalid-assignment] Cannot assign to object of type `Point` with no `__setitem__` method
 namedtuples_usage.py:52:1: error[invalid-assignment] Too many values to unpack: Expected 2
 namedtuples_usage.py:53:1: error[invalid-assignment] Not enough values to unpack: Expected 4

[github-actions]

mypy_primer results

Changes were detected when running on open source projects

trio (https://github.com/python-trio/trio)
- src/trio/_util.py:221:17: error[invalid-assignment] Invalid assignment to data descriptor attribute `__name__` on type `<Protocol with members '__name__'>` with custom `__set__` method
+ src/trio/_util.py:221:17: error[invalid-assignment] Cannot assign to read-only property `__name__` on object of type `<Protocol with members '__name__'>`

pywin32 (https://github.com/mhammond/pywin32)
- com/win32comext/axcontrol/demos/container_ie.py:178:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- com/win32comext/axcontrol/demos/container_ie.py:181:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpfnWndProc` on type `PyWNDCLASS` with custom `__set__` method
+ com/win32comext/axcontrol/demos/container_ie.py:178:9: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ com/win32comext/axcontrol/demos/container_ie.py:181:9: error[invalid-assignment] Cannot assign to read-only property `lpfnWndProc` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpfnWndProc` here
- com/win32comext/directsound/test/ds_record.py:32:1: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwBufferBytes` on type `PyDSCBUFFERDESC` with custom `__set__` method
- com/win32comext/directsound/test/ds_record.py:33:1: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpwfxFormat` on type `PyDSCBUFFERDESC` with custom `__set__` method
+ com/win32comext/directsound/test/ds_record.py:32:1: error[invalid-assignment] Cannot assign to read-only property `dwBufferBytes` on object of type `PyDSCBUFFERDESC`: Attempted assignment to `PyDSCBUFFERDESC.dwBufferBytes` here
+ com/win32comext/directsound/test/ds_record.py:33:1: error[invalid-assignment] Cannot assign to read-only property `lpwfxFormat` on object of type `PyDSCBUFFERDESC`: Attempted assignment to `PyDSCBUFFERDESC.lpwfxFormat` here
- com/win32comext/directsound/test/ds_test.py:47:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `wFormatTag` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:48:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `nChannels` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:49:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `nSamplesPerSec` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:50:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `nAvgBytesPerSec` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:51:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `nBlockAlign` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:52:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `wBitsPerSample` on type `PyWAVEFORMATEX` with custom `__set__` method
+ com/win32comext/directsound/test/ds_test.py:47:5: error[invalid-assignment] Cannot assign to read-only property `wFormatTag` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.wFormatTag` here
+ com/win32comext/directsound/test/ds_test.py:48:5: error[invalid-assignment] Cannot assign to read-only property `nChannels` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.nChannels` here
+ com/win32comext/directsound/test/ds_test.py:49:5: error[invalid-assignment] Cannot assign to read-only property `nSamplesPerSec` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.nSamplesPerSec` here
+ com/win32comext/directsound/test/ds_test.py:50:5: error[invalid-assignment] Cannot assign to read-only property `nAvgBytesPerSec` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.nAvgBytesPerSec` here
+ com/win32comext/directsound/test/ds_test.py:51:5: error[invalid-assignment] Cannot assign to read-only property `nBlockAlign` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.nBlockAlign` here
+ com/win32comext/directsound/test/ds_test.py:52:5: error[invalid-assignment] Cannot assign to read-only property `wBitsPerSample` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.wBitsPerSample` here
- com/win32comext/directsound/test/ds_test.py:86:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `wFormatTag` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:87:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `nChannels` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:88:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `nSamplesPerSec` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:89:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `nAvgBytesPerSec` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:90:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `nBlockAlign` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:91:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `wBitsPerSample` on type `PyWAVEFORMATEX` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:110:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFlags` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:111:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwMinSecondarySampleRate` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:112:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwMaxSecondarySampleRate` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:113:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwPrimaryBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:114:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwMaxHwMixingAllBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:115:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwMaxHwMixingStaticBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:116:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwMaxHwMixingStreamingBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:117:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFreeHwMixingAllBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:118:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFreeHwMixingStaticBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:119:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFreeHwMixingStreamingBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:120:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwMaxHw3DAllBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:121:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwMaxHw3DStaticBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:122:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwMaxHw3DStreamingBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:123:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFreeHw3DAllBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:124:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFreeHw3DStaticBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:125:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFreeHw3DStreamingBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:126:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwTotalHwMemBytes` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:127:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFreeHwMemBytes` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:128:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwMaxContigFreeHwMemBytes` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:129:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwUnlockTransferRateHwBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:130:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwPlayCpuOverheadSwBuffers` on type `PyDSCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:164:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFlags` on type `PyDSBCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:165:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwBufferBytes` on type `PyDSBCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:166:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwUnlockTransferRate` on type `PyDSBCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:167:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwPlayCpuOverhead` on type `PyDSBCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:184:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFlags` on type `PyDSCCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:185:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFormats` on type `PyDSCCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:186:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwChannels` on type `PyDSCCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:202:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFlags` on type `PyDSCBCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:203:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwBufferBytes` on type `PyDSCBCAPS` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:218:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFlags` on type `PyDSBUFFERDESC` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:219:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwBufferBytes` on type `PyDSBUFFERDESC` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:220:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpwfxFormat` on type `PyDSBUFFERDESC` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:255:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFlags` on type `PyDSCBUFFERDESC` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:256:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwBufferBytes` on type `PyDSCBUFFERDESC` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:257:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpwfxFormat` on type `PyDSCBUFFERDESC` with custom `__set__` method
+ com/win32comext/directsound/test/ds_test.py:86:9: error[invalid-assignment] Cannot assign to read-only property `wFormatTag` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.wFormatTag` here
+ com/win32comext/directsound/test/ds_test.py:87:9: error[invalid-assignment] Cannot assign to read-only property `nChannels` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.nChannels` here
+ com/win32comext/directsound/test/ds_test.py:88:9: error[invalid-assignment] Cannot assign to read-only property `nSamplesPerSec` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.nSamplesPerSec` here
+ com/win32comext/directsound/test/ds_test.py:89:9: error[invalid-assignment] Cannot assign to read-only property `nAvgBytesPerSec` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.nAvgBytesPerSec` here
+ com/win32comext/directsound/test/ds_test.py:90:9: error[invalid-assignment] Cannot assign to read-only property `nBlockAlign` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.nBlockAlign` here
+ com/win32comext/directsound/test/ds_test.py:91:9: error[invalid-assignment] Cannot assign to read-only property `wBitsPerSample` on object of type `PyWAVEFORMATEX`: Attempted assignment to `PyWAVEFORMATEX.wBitsPerSample` here
+ com/win32comext/directsound/test/ds_test.py:110:9: error[invalid-assignment] Cannot assign to read-only property `dwFlags` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwFlags` here
+ com/win32comext/directsound/test/ds_test.py:111:9: error[invalid-assignment] Cannot assign to read-only property `dwMinSecondarySampleRate` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwMinSecondarySampleRate` here
+ com/win32comext/directsound/test/ds_test.py:112:9: error[invalid-assignment] Cannot assign to read-only property `dwMaxSecondarySampleRate` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwMaxSecondarySampleRate` here
+ com/win32comext/directsound/test/ds_test.py:113:9: error[invalid-assignment] Cannot assign to read-only property `dwPrimaryBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwPrimaryBuffers` here
+ com/win32comext/directsound/test/ds_test.py:114:9: error[invalid-assignment] Cannot assign to read-only property `dwMaxHwMixingAllBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwMaxHwMixingAllBuffers` here
+ com/win32comext/directsound/test/ds_test.py:115:9: error[invalid-assignment] Cannot assign to read-only property `dwMaxHwMixingStaticBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwMaxHwMixingStaticBuffers` here
+ com/win32comext/directsound/test/ds_test.py:116:9: error[invalid-assignment] Cannot assign to read-only property `dwMaxHwMixingStreamingBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwMaxHwMixingStreamingBuffers` here
+ com/win32comext/directsound/test/ds_test.py:117:9: error[invalid-assignment] Cannot assign to read-only property `dwFreeHwMixingAllBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwFreeHwMixingAllBuffers` here
+ com/win32comext/directsound/test/ds_test.py:118:9: error[invalid-assignment] Cannot assign to read-only property `dwFreeHwMixingStaticBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwFreeHwMixingStaticBuffers` here
+ com/win32comext/directsound/test/ds_test.py:119:9: error[invalid-assignment] Cannot assign to read-only property `dwFreeHwMixingStreamingBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwFreeHwMixingStreamingBuffers` here
+ com/win32comext/directsound/test/ds_test.py:120:9: error[invalid-assignment] Cannot assign to read-only property `dwMaxHw3DAllBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwMaxHw3DAllBuffers` here
+ com/win32comext/directsound/test/ds_test.py:121:9: error[invalid-assignment] Cannot assign to read-only property `dwMaxHw3DStaticBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwMaxHw3DStaticBuffers` here
+ com/win32comext/directsound/test/ds_test.py:122:9: error[invalid-assignment] Cannot assign to read-only property `dwMaxHw3DStreamingBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwMaxHw3DStreamingBuffers` here
+ com/win32comext/directsound/test/ds_test.py:123:9: error[invalid-assignment] Cannot assign to read-only property `dwFreeHw3DAllBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwFreeHw3DAllBuffers` here
+ com/win32comext/directsound/test/ds_test.py:124:9: error[invalid-assignment] Cannot assign to read-only property `dwFreeHw3DStaticBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwFreeHw3DStaticBuffers` here
+ com/win32comext/directsound/test/ds_test.py:125:9: error[invalid-assignment] Cannot assign to read-only property `dwFreeHw3DStreamingBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwFreeHw3DStreamingBuffers` here
+ com/win32comext/directsound/test/ds_test.py:126:9: error[invalid-assignment] Cannot assign to read-only property `dwTotalHwMemBytes` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwTotalHwMemBytes` here
+ com/win32comext/directsound/test/ds_test.py:127:9: error[invalid-assignment] Cannot assign to read-only property `dwFreeHwMemBytes` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwFreeHwMemBytes` here
+ com/win32comext/directsound/test/ds_test.py:128:9: error[invalid-assignment] Cannot assign to read-only property `dwMaxContigFreeHwMemBytes` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwMaxContigFreeHwMemBytes` here
+ com/win32comext/directsound/test/ds_test.py:129:9: error[invalid-assignment] Cannot assign to read-only property `dwUnlockTransferRateHwBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwUnlockTransferRateHwBuffers` here
+ com/win32comext/directsound/test/ds_test.py:130:9: error[invalid-assignment] Cannot assign to read-only property `dwPlayCpuOverheadSwBuffers` on object of type `PyDSCAPS`: Attempted assignment to `PyDSCAPS.dwPlayCpuOverheadSwBuffers` here
+ com/win32comext/directsound/test/ds_test.py:164:9: error[invalid-assignment] Cannot assign to read-only property `dwFlags` on object of type `PyDSBCAPS`: Attempted assignment to `PyDSBCAPS.dwFlags` here
+ com/win32comext/directsound/test/ds_test.py:165:9: error[invalid-assignment] Cannot assign to read-only property `dwBufferBytes` on object of type `PyDSBCAPS`: Attempted assignment to `PyDSBCAPS.dwBufferBytes` here
+ com/win32comext/directsound/test/ds_test.py:166:9: error[invalid-assignment] Cannot assign to read-only property `dwUnlockTransferRate` on object of type `PyDSBCAPS`: Attempted assignment to `PyDSBCAPS.dwUnlockTransferRate` here
+ com/win32comext/directsound/test/ds_test.py:167:9: error[invalid-assignment] Cannot assign to read-only property `dwPlayCpuOverhead` on object of type `PyDSBCAPS`: Attempted assignment to `PyDSBCAPS.dwPlayCpuOverhead` here
+ com/win32comext/directsound/test/ds_test.py:184:9: error[invalid-assignment] Cannot assign to read-only property `dwFlags` on object of type `PyDSCCAPS`: Attempted assignment to `PyDSCCAPS.dwFlags` here
+ com/win32comext/directsound/test/ds_test.py:185:9: error[invalid-assignment] Cannot assign to read-only property `dwFormats` on object of type `PyDSCCAPS`: Attempted assignment to `PyDSCCAPS.dwFormats` here
+ com/win32comext/directsound/test/ds_test.py:186:9: error[invalid-assignment] Cannot assign to read-only property `dwChannels` on object of type `PyDSCCAPS`: Attempted assignment to `PyDSCCAPS.dwChannels` here
+ com/win32comext/directsound/test/ds_test.py:202:9: error[invalid-assignment] Cannot assign to read-only property `dwFlags` on object of type `PyDSCBCAPS`: Attempted assignment to `PyDSCBCAPS.dwFlags` here
+ com/win32comext/directsound/test/ds_test.py:203:9: error[invalid-assignment] Cannot assign to read-only property `dwBufferBytes` on object of type `PyDSCBCAPS`: Attempted assignment to `PyDSCBCAPS.dwBufferBytes` here
+ com/win32comext/directsound/test/ds_test.py:218:9: error[invalid-assignment] Cannot assign to read-only property `dwFlags` on object of type `PyDSBUFFERDESC`: Attempted assignment to `PyDSBUFFERDESC.dwFlags` here
+ com/win32comext/directsound/test/ds_test.py:219:9: error[invalid-assignment] Cannot assign to read-only property `dwBufferBytes` on object of type `PyDSBUFFERDESC`: Attempted assignment to `PyDSBUFFERDESC.dwBufferBytes` here
+ com/win32comext/directsound/test/ds_test.py:220:9: error[invalid-assignment] Cannot assign to read-only property `lpwfxFormat` on object of type `PyDSBUFFERDESC`: Attempted assignment to `PyDSBUFFERDESC.lpwfxFormat` here
+ com/win32comext/directsound/test/ds_test.py:255:9: error[invalid-assignment] Cannot assign to read-only property `dwFlags` on object of type `PyDSCBUFFERDESC`: Attempted assignment to `PyDSCBUFFERDESC.dwFlags` here
+ com/win32comext/directsound/test/ds_test.py:256:9: error[invalid-assignment] Cannot assign to read-only property `dwBufferBytes` on object of type `PyDSCBUFFERDESC`: Attempted assignment to `PyDSCBUFFERDESC.dwBufferBytes` here
+ com/win32comext/directsound/test/ds_test.py:257:9: error[invalid-assignment] Cannot assign to read-only property `lpwfxFormat` on object of type `PyDSCBUFFERDESC`: Attempted assignment to `PyDSCBUFFERDESC.lpwfxFormat` here
- com/win32comext/directsound/test/ds_test.py:325:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwFlags` on type `PyDSBUFFERDESC` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:326:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwBufferBytes` on type `PyDSBUFFERDESC` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:327:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpwfxFormat` on type `PyDSBUFFERDESC` with custom `__set__` method
+ com/win32comext/directsound/test/ds_test.py:325:13: error[invalid-assignment] Cannot assign to read-only property `dwFlags` on object of type `PyDSBUFFERDESC`: Attempted assignment to `PyDSBUFFERDESC.dwFlags` here
+ com/win32comext/directsound/test/ds_test.py:326:13: error[invalid-assignment] Cannot assign to read-only property `dwBufferBytes` on object of type `PyDSBUFFERDESC`: Attempted assignment to `PyDSBUFFERDESC.dwBufferBytes` here
+ com/win32comext/directsound/test/ds_test.py:327:13: error[invalid-assignment] Cannot assign to read-only property `lpwfxFormat` on object of type `PyDSBUFFERDESC`: Attempted assignment to `PyDSBUFFERDESC.lpwfxFormat` here
- com/win32comext/directsound/test/ds_test.py:372:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dwBufferBytes` on type `PyDSCBUFFERDESC` with custom `__set__` method
- com/win32comext/directsound/test/ds_test.py:373:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpwfxFormat` on type `PyDSCBUFFERDESC` with custom `__set__` method
+ com/win32comext/directsound/test/ds_test.py:372:9: error[invalid-assignment] Cannot assign to read-only property `dwBufferBytes` on object of type `PyDSCBUFFERDESC`: Attempted assignment to `PyDSCBUFFERDESC.dwBufferBytes` here
+ com/win32comext/directsound/test/ds_test.py:373:9: error[invalid-assignment] Cannot assign to read-only property `lpwfxFormat` on object of type `PyDSCBUFFERDESC`: Attempted assignment to `PyDSCBUFFERDESC.lpwfxFormat` here
- com/win32comext/shell/demos/explorer_browser.py:52:17: error[invalid-assignment] Invalid assignment to data descriptor attribute `hInstance` on type `PyWNDCLASS` with custom `__set__` method
- com/win32comext/shell/demos/explorer_browser.py:53:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- com/win32comext/shell/demos/explorer_browser.py:54:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpfnWndProc` on type `PyWNDCLASS` with custom `__set__` method
+ com/win32comext/shell/demos/explorer_browser.py:52:17: error[invalid-assignment] Cannot assign to read-only property `hInstance` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hInstance` here
+ com/win32comext/shell/demos/explorer_browser.py:53:9: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ com/win32comext/shell/demos/explorer_browser.py:54:9: error[invalid-assignment] Cannot assign to read-only property `lpfnWndProc` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpfnWndProc` here
- com/win32comext/shell/demos/servers/shell_view.py:443:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `hInstance` on type `PyWNDCLASS` with custom `__set__` method
- com/win32comext/shell/demos/servers/shell_view.py:444:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- com/win32comext/shell/demos/servers/shell_view.py:445:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `style` on type `PyWNDCLASS` with custom `__set__` method
+ com/win32comext/shell/demos/servers/shell_view.py:443:9: error[invalid-assignment] Cannot assign to read-only property `hInstance` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hInstance` here
+ com/win32comext/shell/demos/servers/shell_view.py:444:9: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ com/win32comext/shell/demos/servers/shell_view.py:445:9: error[invalid-assignment] Cannot assign to read-only property `style` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.style` here
- win32/Demos/desktopmanager.py:89:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `hInstance` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/desktopmanager.py:90:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/desktopmanager.py:91:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `style` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/desktopmanager.py:92:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `hCursor` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/desktopmanager.py:93:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `hbrBackground` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/desktopmanager.py:94:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpfnWndProc` on type `PyWNDCLASS` with custom `__set__` method
+ win32/Demos/desktopmanager.py:89:5: error[invalid-assignment] Cannot assign to read-only property `hInstance` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hInstance` here
+ win32/Demos/desktopmanager.py:90:5: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ win32/Demos/desktopmanager.py:91:5: error[invalid-assignment] Cannot assign to read-only property `style` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.style` here
+ win32/Demos/desktopmanager.py:92:5: error[invalid-assignment] Cannot assign to read-only property `hCursor` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hCursor` here
+ win32/Demos/desktopmanager.py:93:5: error[invalid-assignment] Cannot assign to read-only property `hbrBackground` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hbrBackground` here
+ win32/Demos/desktopmanager.py:94:5: error[invalid-assignment] Cannot assign to read-only property `lpfnWndProc` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpfnWndProc` here
- win32/Demos/print_desktop.py:87:1: error[invalid-assignment] Invalid assignment to data descriptor attribute `lfHeight` on type `PyLOGFONT` with custom `__set__` method
- win32/Demos/print_desktop.py:88:1: error[invalid-assignment] Invalid assignment to data descriptor attribute `lfWidth` on type `PyLOGFONT` with custom `__set__` method
- win32/Demos/print_desktop.py:89:1: error[invalid-assignment] Invalid assignment to data descriptor attribute `lfWeight` on type `PyLOGFONT` with custom `__set__` method
- win32/Demos/print_desktop.py:90:1: error[invalid-assignment] Invalid assignment to data descriptor attribute `lfItalic` on type `PyLOGFONT` with custom `__set__` method
- win32/Demos/print_desktop.py:91:1: error[invalid-assignment] Invalid assignment to data descriptor attribute `lfUnderline` on type `PyLOGFONT` with custom `__set__` method
+ win32/Demos/print_desktop.py:87:1: error[invalid-assignment] Cannot assign to read-only property `lfHeight` on object of type `PyLOGFONT`: Attempted assignment to `PyLOGFONT.lfHeight` here
+ win32/Demos/print_desktop.py:88:1: error[invalid-assignment] Cannot assign to read-only property `lfWidth` on object of type `PyLOGFONT`: Attempted assignment to `PyLOGFONT.lfWidth` here
+ win32/Demos/print_desktop.py:89:1: error[invalid-assignment] Cannot assign to read-only property `lfWeight` on object of type `PyLOGFONT`: Attempted assignment to `PyLOGFONT.lfWeight` here
+ win32/Demos/print_desktop.py:90:1: error[invalid-assignment] Cannot assign to read-only property `lfItalic` on object of type `PyLOGFONT`: Attempted assignment to `PyLOGFONT.lfItalic` here
+ win32/Demos/print_desktop.py:91:1: error[invalid-assignment] Cannot assign to read-only property `lfUnderline` on object of type `PyLOGFONT`: Attempted assignment to `PyLOGFONT.lfUnderline` here
- win32/Demos/security/sspi/simple_auth.py:59:1: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/Demos/security/sspi/simple_auth.py:68:1: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
+ win32/Demos/security/sspi/simple_auth.py:59:1: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/Demos/security/sspi/simple_auth.py:68:1: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
- win32/Demos/win32clipboard_bitmapdemo.py:22:17: error[invalid-assignment] Invalid assignment to data descriptor attribute `lfHeight` on type `PyLOGFONT` with custom `__set__` method
- win32/Demos/win32clipboard_bitmapdemo.py:23:17: error[invalid-assignment] Invalid assignment to data descriptor attribute `lfWidth` on type `PyLOGFONT` with custom `__set__` method
+ win32/Demos/win32clipboard_bitmapdemo.py:22:17: error[invalid-assignment] Cannot assign to read-only property `lfHeight` on object of type `PyLOGFONT`: Attempted assignment to `PyLOGFONT.lfHeight` here
+ win32/Demos/win32clipboard_bitmapdemo.py:23:17: error[invalid-assignment] Cannot assign to read-only property `lfWidth` on object of type `PyLOGFONT`: Attempted assignment to `PyLOGFONT.lfWidth` here
- win32/Demos/win32clipboard_bitmapdemo.py:88:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32clipboard_bitmapdemo.py:89:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `style` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32clipboard_bitmapdemo.py:90:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `hbrBackground` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32clipboard_bitmapdemo.py:91:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpfnWndProc` on type `PyWNDCLASS` with custom `__set__` method
+ win32/Demos/win32clipboard_bitmapdemo.py:88:9: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ win32/Demos/win32clipboard_bitmapdemo.py:89:9: error[invalid-assignment] Cannot assign to read-only property `style` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.style` here
+ win32/Demos/win32clipboard_bitmapdemo.py:90:9: error[invalid-assignment] Cannot assign to read-only property `hbrBackground` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hbrBackground` here
+ win32/Demos/win32clipboard_bitmapdemo.py:91:9: error[invalid-assignment] Cannot assign to read-only property `lpfnWndProc` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpfnWndProc` here
- win32/Demos/win32comport_demo.py:106:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `BaudRate` on type `PyDCB` with custom `__set__` method
- win32/Demos/win32comport_demo.py:107:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `ByteSize` on type `PyDCB` with custom `__set__` method
- win32/Demos/win32comport_demo.py:108:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Parity` on type `PyDCB` with custom `__set__` method
- win32/Demos/win32comport_demo.py:109:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `StopBits` on type `PyDCB` with custom `__set__` method
+ win32/Demos/win32comport_demo.py:106:9: error[invalid-assignment] Cannot assign to read-only property `BaudRate` on object of type `PyDCB`: Attempted assignment to `PyDCB.BaudRate` here
+ win32/Demos/win32comport_demo.py:107:9: error[invalid-assignment] Cannot assign to read-only property `ByteSize` on object of type `PyDCB`: Attempted assignment to `PyDCB.ByteSize` here
+ win32/Demos/win32comport_demo.py:108:9: error[invalid-assignment] Cannot assign to read-only property `Parity` on object of type `PyDCB`: Attempted assignment to `PyDCB.Parity` here
+ win32/Demos/win32comport_demo.py:109:9: error[invalid-assignment] Cannot assign to read-only property `StopBits` on object of type `PyDCB`: Attempted assignment to `PyDCB.StopBits` here
- win32/Demos/win32gui_demo.py:111:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_demo.py:112:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `style` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_demo.py:113:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `hbrBackground` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_demo.py:114:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpfnWndProc` on type `PyWNDCLASS` with custom `__set__` method
+ win32/Demos/win32gui_demo.py:111:5: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ win32/Demos/win32gui_demo.py:112:5: error[invalid-assignment] Cannot assign to read-only property `style` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.style` here
+ win32/Demos/win32gui_demo.py:113:5: error[invalid-assignment] Cannot assign to read-only property `hbrBackground` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hbrBackground` here
+ win32/Demos/win32gui_demo.py:114:5: error[invalid-assignment] Cannot assign to read-only property `lpfnWndProc` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpfnWndProc` here
- win32/Demos/win32gui_demo.py:139:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_demo.py:140:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `style` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_demo.py:141:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `hbrBackground` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_demo.py:142:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpfnWndProc` on type `PyWNDCLASS` with custom `__set__` method
+ win32/Demos/win32gui_demo.py:139:5: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ win32/Demos/win32gui_demo.py:140:5: error[invalid-assignment] Cannot assign to read-only property `style` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.style` here
+ win32/Demos/win32gui_demo.py:141:5: error[invalid-assignment] Cannot assign to read-only property `hbrBackground` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hbrBackground` here
+ win32/Demos/win32gui_demo.py:142:5: error[invalid-assignment] Cannot assign to read-only property `lpfnWndProc` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpfnWndProc` here
- win32/Demos/win32gui_devicenotify.py:39:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_devicenotify.py:40:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `style` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_devicenotify.py:41:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `hbrBackground` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_devicenotify.py:42:5: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpfnWndProc` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_dialog.py:126:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `hInstance` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_dialog.py:127:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_dialog.py:128:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `style` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_dialog.py:129:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `hCursor` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_dialog.py:130:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `hbrBackground` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_dialog.py:131:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpfnWndProc` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_dialog.py:133:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `cbWndExtra` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_dialog.py:139:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `hIcon` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_dialog.py:141:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `hIcon` on type `PyWNDCLASS` with custom `__set__` method
+ win32/Demos/win32gui_devicenotify.py:39:5: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ win32/Demos/win32gui_devicenotify.py:40:5: error[invalid-assignment] Cannot assign to read-only property `style` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.style` here
+ win32/Demos/win32gui_devicenotify.py:41:5: error[invalid-assignment] Cannot assign to read-only property `hbrBackground` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hbrBackground` here
+ win32/Demos/win32gui_devicenotify.py:42:5: error[invalid-assignment] Cannot assign to read-only property `lpfnWndProc` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpfnWndProc` here
+ win32/Demos/win32gui_dialog.py:126:9: error[invalid-assignment] Cannot assign to read-only property `hInstance` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hInstance` here
+ win32/Demos/win32gui_dialog.py:127:9: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ win32/Demos/win32gui_dialog.py:128:9: error[invalid-assignment] Cannot assign to read-only property `style` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.style` here
+ win32/Demos/win32gui_dialog.py:129:9: error[invalid-assignment] Cannot assign to read-only property `hCursor` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hCursor` here
+ win32/Demos/win32gui_dialog.py:130:9: error[invalid-assignment] Cannot assign to read-only property `hbrBackground` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hbrBackground` here
+ win32/Demos/win32gui_dialog.py:131:9: error[invalid-assignment] Cannot assign to read-only property `lpfnWndProc` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpfnWndProc` here
+ win32/Demos/win32gui_dialog.py:133:9: error[invalid-assignment] Cannot assign to read-only property `cbWndExtra` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.cbWndExtra` here
+ win32/Demos/win32gui_dialog.py:139:13: error[invalid-assignment] Cannot assign to read-only property `hIcon` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hIcon` here
+ win32/Demos/win32gui_dialog.py:141:13: error[invalid-assignment] Cannot assign to read-only property `hIcon` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hIcon` here
- win32/Demos/win32gui_menu.py:91:17: error[invalid-assignment] Invalid assignment to data descriptor attribute `hInstance` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_menu.py:92:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_menu.py:93:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpfnWndProc` on type `PyWNDCLASS` with custom `__set__` method
+ win32/Demos/win32gui_menu.py:91:17: error[invalid-assignment] Cannot assign to read-only property `hInstance` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hInstance` here
+ win32/Demos/win32gui_menu.py:92:9: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ win32/Demos/win32gui_menu.py:93:9: error[invalid-assignment] Cannot assign to read-only property `lpfnWndProc` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpfnWndProc` here
- win32/Demos/win32gui_taskbar.py:23:17: error[invalid-assignment] Invalid assignment to data descriptor attribute `hInstance` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_taskbar.py:24:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpszClassName` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_taskbar.py:25:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `style` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_taskbar.py:26:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `hCursor` on type `PyWNDCLASS` with custom `__set__` method
+ win32/Demos/win32gui_taskbar.py:23:17: error[invalid-assignment] Cannot assign to read-only property `hInstance` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hInstance` here
+ win32/Demos/win32gui_taskbar.py:24:9: error[invalid-assignment] Cannot assign to read-only property `lpszClassName` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpszClassName` here
+ win32/Demos/win32gui_taskbar.py:25:9: error[invalid-assignment] Cannot assign to read-only property `style` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.style` here
+ win32/Demos/win32gui_taskbar.py:26:9: error[invalid-assignment] Cannot assign to read-only property `hCursor` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hCursor` here
- win32/Demos/win32gui_taskbar.py:27:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `hbrBackground` on type `PyWNDCLASS` with custom `__set__` method
- win32/Demos/win32gui_taskbar.py:28:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `lpfnWndProc` on type `PyWNDCLASS` with custom `__set__` method
+ win32/Demos/win32gui_taskbar.py:27:9: error[invalid-assignment] Cannot assign to read-only property `hbrBackground` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.hbrBackground` here
+ win32/Demos/win32gui_taskbar.py:28:9: error[invalid-assignment] Cannot assign to read-only property `lpfnWndProc` on object of type `PyWNDCLASS`: Attempted assignment to `PyWNDCLASS.lpfnWndProc` here
- win32/Lib/sspi.py:57:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/Lib/sspi.py:68:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/Lib/sspi.py:69:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/Lib/sspi.py:83:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/Lib/sspi.py:96:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/Lib/sspi.py:97:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/Lib/sspi.py:114:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/Lib/sspi.py:143:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/Lib/sspi.py:221:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/Lib/sspi.py:298:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
+ win32/Lib/sspi.py:57:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/Lib/sspi.py:68:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/Lib/sspi.py:69:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/Lib/sspi.py:83:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/Lib/sspi.py:96:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/Lib/sspi.py:97:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/Lib/sspi.py:114:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/Lib/sspi.py:143:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/Lib/sspi.py:221:13: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/Lib/sspi.py:298:13: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
- win32/test/test_sspi.py:73:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/test/test_sspi.py:106:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/test/test_sspi.py:115:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
- win32/test/test_sspi.py:144:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `Buffer` on type `PySecBuffer` with custom `__set__` method
+ win32/test/test_sspi.py:73:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/test/test_sspi.py:106:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/test/test_sspi.py:115:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here
+ win32/test/test_sspi.py:144:9: error[invalid-assignment] Cannot assign to read-only property `Buffer` on object of type `PySecBuffer`: Attempted assignment to `PySecBuffer.Buffer` here

sympy (https://github.com/sympy/sympy)
- sympy/physics/biomechanics/tests/test_musculotendon.py:782:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `e` on type `MusculotendonDeGroote2016` with custom `__set__` method
- sympy/physics/biomechanics/tests/test_musculotendon.py:784:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `excitation` on type `MusculotendonDeGroote2016` with custom `__set__` method
- sympy/physics/biomechanics/tests/test_musculotendon.py:805:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `a` on type `MusculotendonDeGroote2016` with custom `__set__` method
- sympy/physics/biomechanics/tests/test_musculotendon.py:807:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `activation` on type `MusculotendonDeGroote2016` with custom `__set__` method
+ sympy/physics/biomechanics/tests/test_musculotendon.py:782:13: error[invalid-assignment] Cannot assign to read-only property `e` on object of type `MusculotendonDeGroote2016`: Attempted assignment to `MusculotendonDeGroote2016.e` here
+ sympy/physics/biomechanics/tests/test_musculotendon.py:784:13: error[invalid-assignment] Cannot assign to read-only property `excitation` on object of type `MusculotendonDeGroote2016`: Attempted assignment to `MusculotendonDeGroote2016.excitation` here
+ sympy/physics/biomechanics/tests/test_musculotendon.py:805:13: error[invalid-assignment] Cannot assign to read-only property `a` on object of type `MusculotendonDeGroote2016`: Attempted assignment to `MusculotendonDeGroote2016.a` here
+ sympy/physics/biomechanics/tests/test_musculotendon.py:807:13: error[invalid-assignment] Cannot assign to read-only property `activation` on object of type `MusculotendonDeGroote2016`: Attempted assignment to `MusculotendonDeGroote2016.activation` here
- sympy/physics/mechanics/tests/test_system.py:171:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `bodies` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:173:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `coordinates` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:175:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dyn_implicit_rhs` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:177:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `comb_implicit_rhs` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:179:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `loads` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:181:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `dyn_implicit_mat` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:183:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `comb_implicit_mat` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:185:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `kin_explicit_rhs` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:187:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `comb_explicit_rhs` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:189:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `speeds` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:191:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `states` on type `SymbolicSystem` with custom `__set__` method
- sympy/physics/mechanics/tests/test_system.py:193:9: error[invalid-assignment] Invalid assignment to data descriptor attribute `alg_con` on type `SymbolicSystem` with custom `__set__` method
+ sympy/physics/mechanics/tests/test_system.py:171:9: error[invalid-assignment] Cannot assign to read-only property `bodies` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.bodies` here
+ sympy/physics/mechanics/tests/test_system.py:173:9: error[invalid-assignment] Cannot assign to read-only property `coordinates` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.coordinates` here
+ sympy/physics/mechanics/tests/test_system.py:175:9: error[invalid-assignment] Cannot assign to read-only property `dyn_implicit_rhs` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.dyn_implicit_rhs` here
+ sympy/physics/mechanics/tests/test_system.py:177:9: error[invalid-assignment] Cannot assign to read-only property `comb_implicit_rhs` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.comb_implicit_rhs` here
+ sympy/physics/mechanics/tests/test_system.py:179:9: error[invalid-assignment] Cannot assign to read-only property `loads` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.loads` here
+ sympy/physics/mechanics/tests/test_system.py:181:9: error[invalid-assignment] Cannot assign to read-only property `dyn_implicit_mat` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.dyn_implicit_mat` here
+ sympy/physics/mechanics/tests/test_system.py:183:9: error[invalid-assignment] Cannot assign to read-only property `comb_implicit_mat` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.comb_implicit_mat` here
+ sympy/physics/mechanics/tests/test_system.py:185:9: error[invalid-assignment] Cannot assign to read-only property `kin_explicit_rhs` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.kin_explicit_rhs` here
+ sympy/physics/mechanics/tests/test_system.py:187:9: error[invalid-assignment] Cannot assign to read-only property `comb_explicit_rhs` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.comb_explicit_rhs` here
+ sympy/physics/mechanics/tests/test_system.py:189:9: error[invalid-assignment] Cannot assign to read-only property `speeds` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.speeds` here
+ sympy/physics/mechanics/tests/test_system.py:191:9: error[invalid-assignment] Cannot assign to read-only property `states` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.states` here
+ sympy/physics/mechanics/tests/test_system.py:193:9: error[invalid-assignment] Cannot assign to read-only property `alg_con` on object of type `SymbolicSystem`: Attempted assignment to `SymbolicSystem.alg_con` here

scipy (https://github.com/scipy/scipy)
- scipy/stats/_mstats_extras.py:88:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `flat` on type `ndarray[tuple[int, int], Unknown]` with custom `__set__` method
- scipy/stats/_mstats_extras.py:181:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `flat` on type `ndarray[tuple[int], Unknown]` with custom `__set__` method
+ scipy/stats/_mstats_extras.py:88:13: error[invalid-assignment] Cannot assign to read-only property `flat` on object of type `ndarray[tuple[int, int], Unknown]`: Attempted assignment to `ndarray[tuple[int, int], Unknown].flat` here
+ scipy/stats/_mstats_extras.py:181:13: error[invalid-assignment] Cannot assign to read-only property `flat` on object of type `ndarray[tuple[int], Unknown]`: Attempted assignment to `ndarray[tuple[int], Unknown].flat` here
- scipy/stats/tests/test_continuous.py:2176:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `components` on type `Mixture` with custom `__set__` method
- scipy/stats/tests/test_continuous.py:2178:13: error[invalid-assignment] Invalid assignment to data descriptor attribute `weights` on type `Mixture` with custom `__set__` method
+ scipy/stats/tests/test_continuous.py:2176:13: error[invalid-assignment] Cannot assign to read-only property `components` on object of type `Mixture`: Attempted assignment to `Mixture.components` here
+ scipy/stats/tests/test_continuous.py:2178:13: error[invalid-assignment] Cannot assign to read-only property `weights` on object of type `Mixture`: Attempted assignment to `Mixture.weights` here

No memory usage changes detected ✅

[sharkdp]

Very nice — thank you!