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I'm trying to integrate a Cython module into my project and I'm having trouble getting it to compile correctly. I have traced my problem to this minimal example:

Say I have two files a.py and b.pyx located in the same directory, if I then do the following in a.py:

import pyximport; pyximport.install()
import b

Then everything works fine, b.pyx is compiled and imported successfully.

But if I instead do this in a.py, assuming that a.py and b.pyx are located in dir1/dir2:

import os
import sys

sys.path.append(os.path.join(os.path.dirname(__file__), '../..'))

import pyximport; pyximport.install()
import dir1.dir2.b

(which is somewhat nonsensical in this example but illustrates what's preventing me from importing a from elsewhere in my module hierarchy), I get the following exception:

Traceback (most recent call last):
  File "<frozen importlib._bootstrap>", line 888, in _find_spec
AttributeError: 'PyxImporter' object has no attribute 'find_spec'

Is this expected behaviour or is something wrong with my installation? (I'm on Windows 10)

NOTE: there is another question with a very similar title on SO which does not answer my question at all.

Peter
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1 Answers1

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I had this error message (though not necessarily the same path situation) and it was resolved by upgrading Cython from 0.28.5 to 0.29.

Sertorius
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