[PyQt] ValueError: PyCapsule_GetPointer called with incorrect name

Patrick Stinson patrickkidd at gmail.com
Fri Apr 24 07:10:12 BST 2020

When I import my sip extension module (named “_pkdiagram”) on windows I get the following error:

C:\Users\patrick\Desktop\familydiagram\_pkdiagram>python -c "import _pkdiagram"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
SystemError: initialization of _pkdiagram failed without raising an exception

Turns out the mod init function fails without setting an exception when it can’t find "_C_API" on the sip module - the call returns null.

sip_capiobj = PyDict_GetItemString(PyModule_GetDict(sip_sipmod), "_C_API");

Any ideas?

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