#126 Uninstall Package tab corrupted after installation of a package.

[algo99]

Hi,
the issue is related to WinPython Control Panel from WinPython-2.7.10.3 (both 32 and 64 bit).

After manual install of this package:
https://pypi.python.org/pypi/pyOSC/0.3.5b-5294
the Uninstall Packages tab in the Control Panel GUI becomes empty (all entries disappear their).

[stonebig]

you may try the "pip list" command to see how it works with this package installed. Eventually post the result here.

[algo99]

Ok, after some inverstigation more facts on the issue:

1. Note the package file has name pyOSC-0.3.5b-5294.tar.gz (with a '-' sign within version number) so dragging this one onto WinPython Control Panel "Install/Upgrade Packages" tab shows:
   Action: Install
   Name: pyOSC-0.3.5b
   Version: 5294 (already wrong, Ok malformed package name :)

2. After installation in Lib\site-packages appears a folder pyOSC-0.3.5b5294.dist-info (without '-' sign between '5b' and '5294')

3. If I understand correctly when the Control Panel updates 'Uninstalled Packages' list it reads all 'dist-info' directories in Lib\site-packages and some-how the parsing of the pyOSC version "0.3.5b5294" fails and the list stays uninitialized ?

HTH
Albert

PS. pip list shows:
...
pyOSC (0.3.5b5294)
...

[stonebig]

WinPython relies on pip list for the informations, so I expected a failure is happening because of this strange packaging name. I don't see why.
The code that get the list is:

import imp, pip
pip.utils.pkg_resources = imp.reload(pip.utils.pkg_resources)
pip_list = [(i.key, i.version) for i in pip.get_installed_distributions()]
print (pip_list)

can you try it and paste the result here ? If it doesn't fell at that point, I think you have an orphan issue

[algo99]

Ok, I could figure out it.

The reason the list stays empty is an exception in wppm.get_installed_packages(), line 358:

# create pip package list
wppip = [Package('%s-%s-py2.py3-none-any.whl' %
         (i[0].lower(), i[1])) for i in pip_list]

for the input parameter pyosc-0.3.5b5294-py2.py3-none-any.whl of Package class.

The exception is thrown from wppm.Package.extract_infos(), line 155:

elif bname.endswith(('.zip', '.tar.gz', '.whl')):
    # distutils sdist
    infos = utils.get_source_package_infos(bname)
    if infos is not None:
        self.name, self.version = infos
        return
raise NotImplementedError("Not supported package type %s" % bname)

because infos for bname=pyosc-0.3.5b5294-py2.py3-none-any.whl is None

This in turn caused by the fact that the regular expression utils.SOURCE_PATTERN does not match the given bname, the match will be None:

def get_source_package_infos(fname):
    """Return a tuple (name, version) of the Python source package"""
    match = re.match(SOURCE_PATTERN, osp.basename(fname))
    if match is not None:
        return match.groups()[:2]

[stonebig]

ah, ok, in your python-2.7.10.amd64\Lib\site-packages\winpython\utils.py , at line 466

try to replace

SOURCE_PATTERN = r'([a-zA-Z0-9\-\_\.]*)-([0-9\.\_]*[a-z]*[0-9]?)(\.zip|\.tar\.gz|\-(py[2-7]*|py[2-7]*\.py[2-7]*)\-none\-any\.whl)'

per

SOURCE_PATTERN = r'([a-zA-Z0-9\-\_\.]*)-([0-9\.\_]*[a-z]*[\-]?[0-9]*)(\.zip|\.tar\.gz|\-(py[2-7]*|py[2-7]*\.py[2-7]*)\-none\-any\.whl)'

It's a bug as, for example, Theano-0.7.1a42-py2-none-any.whl will have the same issue.

[stonebig]

Argh, sourceforge is not showing untouched the expression (or I'm not sure). try to apply change described here:
https://github.com/stonebig/winpython/commit/1ec910197b0f0fa434c1cee2417dac242b1bb67b

[algo99]

Works for me, thank you.

[stonebig]

fixed in next Winpython - 201508