Missing " get_installed_distributions() " attribute in module " pip "

[realJustinLee]

• Pip version: 10.0.0
• Python version: 3.6.5 && 2.7.14
• Operating system: macOS 10.13.5

Description:

for dist in pip.get_installed_distributions():
AttributeError: 'module' object has no attribute 'get_installed_distributions'

What I've run:

pip.get_installed_distributions()

[pfmoore]

See https://pip.pypa.io/en/latest/user_guide/#using-pip-from-your-program - importing functions from pip is not supported. In this case, setuptools (specifically pkg_resources) probably has the functionality you need.

[codingCoffee]

@Great-Li-Xin I think what you're looking for is

pip._internals.get_installed_distributions()

but obviously it's a bad practice. And it's best to not use it, as mentioned by @pfmoore

[pfmoore]

@codingCoffee No, that's explicitly not the right thing to do. Please don't do this, we will not support such usage.

[codingCoffee]

@pfmoore, I agree, that it's a bad practice. I just meant the comment as a quick fix to the problem

[RonnyPfannschmidt]

@08zhangyi thats horrible - pip has json output for that which gives correct parsed results, please edit/remove the bad code

@codingCoffee same for your bad example - because people do actually use bad examples because they are the first thing they find that works

[pradyunsg]

Hi @Great-Li-Xin!

You can use pkg_resources.working_set for getting the same information. It's part of setuptools, which is probably already installed on your system. That is a supported way for getting the exact same information. Using pip's internal functions is not supported.

import pkg_resources

dists = [d for d in pkg_resources.working_set]
# Filter out distributions you don't care about and use.

The function @codingCoffee mentioned has moved into an pip._internal name, to signify that usage of the same is not supported and may change anytime without notice. It is strongly discouraged to use it.

@08zhangyi that seems to be a very fragile way to do this. As @RonnyPfannschmidt points out, there's JSON output pip list --format=json that is much better suited for consumption by computers.

---

@Great-Li-Xin feel free to close this issue if your concerns are addressed. :)

[08zhangyi]

@pradyunsg , thank you! I have deleted my answer and changed my code as you say.

[WonderMr]

For pip 10 use from pip._internal.utils.misc import get_installed_distributions

[pradyunsg]

For pip 10 use from pip._internal.utils.misc import get_installed_distributions

To restate, this function has moved into pip._internal namespace, to signify that usage of the same is not supported and may change anytime without notice. It is strongly discouraged to use it.

[Yemsheng]

Downgrade pip to 9.0.3 will fix this problem

pip install pip==9.0.3

[pradyunsg]

@Yemsheng Downgrading to pip 9.0.3 is a way to work around this issue; you're essentially pinning yourself to an older version of pip until the underlying project changes itself to use a supported way to perform these actions.

[kobigi]

well i believe the suggested solution is best for me
So i can remove the tight couple with pip

import pkg_resources

dists = [d for d in pkg_resources.working_set]

[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.