CODEWITHSUNDEEP
pythonpython-3.xsetuptoolsarchlinux
jibin jose
jibin jose

Reputation: 125

ImportError: No module named 'pkg_resources.extern.six.moves'; 'pkg_resources.extern.six' is not a package

I can not import pkg_resources. Whenever I tried it shows

Python 3.5.2 (default, Jun 28 2016, 08:46:01) 
[GCC 6.1.1 20160602] on linux
Type "help", "copyright", "credits" or "license" for more information.
 >>> import pkg_resources
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 47, in <module>
      from pkg_resources.extern.six.moves import urllib, map, filter
ImportError: No module named 'pkg_resources.extern.six.moves'; 'pkg_resources.extern.six' is not a package

Is from pkg_resources referring to /usr/lib/python3.5/site-packages/pkg_resources/extern (in which there is no six package). Can you point out what I am doing wrong?

I am using Arch Linux, Python 3.5.2

Upvotes: 1

Views: 14034

Answers (2)

Odiljon Djamalov
Odiljon Djamalov

Reputation: 879

In my case I did followings:

1-step:

 sudo apt update && sudo apt install --reinstall python3-certbot
 python3-six

and

2-step:

sudo apt install --reinstall python3-acme python3-certifi python3-chardet python3-configargparse python3-configobj python3-cryptography python3-distro python3-future python3-idna python3-josepy python3-lib2to3 python3-minimal python3-openssl python3-parsedatetime python3-pkg-resources python3-requests python3-requests-toolbelt python3-rfc3339 python3-six python3-tz python3-urllib3 python3-zope.component python3-zope.event python3-zope.hookable python3-zope.interface

Upvotes: 1

grochmal
grochmal

Reputation: 3027

Well, there is no six package there. six is just a name defined in

/usr/lib/python3.5/site-packages/pkg_resources/extern/__init__.py

To be exact, it looks as follows:

names = 'packaging', 'pyparsing', 'six'
VendorImporter(__name__, names).install()

But VendorImporter is a rather uncommon piece of python, it is part of setuptools therefore it can be expected, I guess. In simple words it performs the import from:

/usr/lib/python3.5/site-packages/six.py

Which does contain moves alright:

_MovedItems._moved_attributes = _moved_attributes

moves = _MovedItems(__name__ + ".moves")
_importer._add_module(moves, "moves")

Now let's see how pacman deals with that:

# pacman -Qo /usr/lib/python3.5/site-packages/pkg_resources/extern/__init__.py
/usr/lib/python3.5/site-packages/pkg_resources/extern/__init__.py is owned by python-setuptools 1:25.1.3-1

Right, extern/__init__.py is owned by setuptools, that is what we expected. Now

# pacman -Qo /usr/lib/python3.5/site-packages/six.py
/usr/lib/python3.5/site-packages/six.py is owned by python-six 1.10.0-2

We see that six is part of python-six.

So, we discovered that python-setuptools is dependent on python-six. The python-setuptools dependency chain is therefore incorrect since it does not list python-six, that is something that happens sometimes with package managers (not only pacman but all package managers suffer from problems with dependency chains from time to time).

For the problem at hand, you need to install python-six manually, and python-setuptools will then work as expected:

pacman -S python-six

Upvotes: 2

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