[Solved] pycallgraph Install Error: subprocess-exited-with-error

In the win7 system, under the command terminal, the two methods of installing pycallgraph report the exception of subprocess exited with error

Solution: downgrade setuptools

1. First check the current version of setuptools.

pip show setuptools

2. The version of setuptools has been downgraded. Here, I downgraded it to 57.5.0

pip install --upgrade setuptools==57.5.0

3. Try installing pycallgraph again

pip install pycallgraph

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