[Python] Why PyCharm debugger crashes with "ImportError: cannot import name 'heappush'"

I have a project in PyCharm that its debugger began crashing after I added a few lines of code. I deleted all the code and left a simple print in the file.

The code is located in the folder: "heapq\test_heapq.py" as shown in screenshot 1.

The error I get is "ImportError: cannot import name 'heappush'" as shown in screenshot 2.

What causes this error?





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