`pip.main` error code

[oliver-leung]

• Pip version: 10.0.1
• Python version: 3.7
• Operating system: Windows 7

I'm trying to call the pip.main function:

>>> import pip
>>> pip.main(['install', '--user', 'numpy'])
Collecting numpy
  Downloading https://files.pythonhosted.org/packages/f3/71/94628784c3f07d4bc0dd38f8753e3f751d66cfd5a6823591179608c27f09/numpy-1.14.5-cp35-none-win_amd64.whl (13.4MB)
2

But I'm not getting any indication that the package was installed. Replacing the package with a fake returns the following:

>>> import pip
>>> pip.main(['install', '--user', 'foo'])
Collecting numpy
1

So this implies that the last number is some sort of error code, but I can't seem to find any documentation on what the error code means. Is there some documentation anywhere on what they mean?

[pfmoore]

Calling internal APIs of pip (like pip.main) from your own code is not supported. See here for the details.

In this case, something weird is going on, as pip 10.0.1 doesn't even provide a pip.main function. So it looks like your installation is misconfigured, or you're not running the version of pip that you thought you were.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.