pip freeze > requirements.txt error

问题:

I am getting the following error with that command:

$pip freeze > requirements.txt  Warning: cannot find svn location for distribute==0.6.16dev-r0 

This is my requirements.txt file beforehand:

Django==1.3 django-registration==0.7 

回答1:

First, I'd note that is not an error, but rather a warning (though it is a serious one).

This appears to be an open issue in pip, judging by this issue page on the github repository. The problem arises when pip is installing something a development version that is held on a repository that is not SVN. One example that issue page provides:

mkvirtualenv test --no-site-packages workon test pip install flask==dev pip freeze > requirements.txt 

It will print this result to standard error:

Warning: cannot find svn location for Flask==0.9-devdev-20120114 

But the file will still have:

## FIXME: could not find svn URL in dependency_links for this package: Flask==0.9-devdev-20120114 Jinja2==2.6 Werkzeug==0.8.2 wsgiref==0.1.2 

However, I won't be able to use this file in the future to install Flask. See here:

mkvirtualenv test2 --no-site-packages workon test2 pip install -r requirements.txt 

Will output the error:

Downloading/unpacking Flask==0.9-devdev-20120114 (from -r requirements.txt (line 2)) Could not find a version that satisfies the requirement Flask==0.9-devdev-20120114 (from -r requirements.txt (line 2)) (from versions: ) No distributions matching the version for Flask==0.9-devdev-20120114 (from -r requirements.txt (line 2)) Storing complete log in /Users/dgrtwo/.pip/pip.log 

回答2:

sudo pip install --upgrade distribute 

回答3:

Don't have enough rep to comment, but sudo pip install --upgrade distribute borked my pip installation. Pip version 1.4.1. After running that command, pip freeze gives an AssertionError.

The fix for THAT is sudo pip install setuptools==7.0

The two solutions combined fixed the svn URL warning.

回答4:

I encountered the same problem trying to create a django project and deploy it on heroku. I think the problem was related to having multiple copies of django. Deleting django located at

/usr/local/lib/python2.7/dist-packages/django 

and the reinstalling seemed to solve the problem. I was able to create the requirements.txt without a warning.

回答5:

Ron's idea borked my pip installation too, and MikeTwo's fix did not fix it.

I ended up removing pip and re-installing is, as found here (UzLA's comment). Remove package:

sudo apt-get remove --auto-remove python-pip   

Download official pip installer:

wget https://bootstrap.pypa.io/get-pip.py  

install it:

sudo python get-pip.py   

pip freeze worked properly after this. It did give SNIMissingWarning and InsecurePlatformWarning, see the docs, but that's not the issue here.

Note: the source of this fix as has a 4th step, to set up a symlink from /usr/local/bin/pip to /usr/bin. This may not be necessary. Try stat /usr/local/bin/pip. That should report a regular file, size 200 bytes or so. You can less /usr/local/bin/pip to see what's in it. Then do echo $PATH to check if /usr/local/bin is in there. If it is, the symlink is not needed.

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