irccat / irccat2 fail to load backports.functools_lru_cache on jessie

[jaraco]

hi,

ive installed "irc" with pip, but i had to download irc-13.1.tar.gz manually because the scripts/ directory was nowhere to be found.

steps to reproduce: tar xzf irc-13.1.tar.gz && cd irc-13.1/scripts && python irccat.py

the error comes with python 2.7+, python 3 says wrong syntax

#!python

 python irccat2.py 
Traceback (most recent call last):
  File "irccat2.py", line 10, in <module>
    import irc.client
  File "/home/julius/.local/lib/python2.7/site-packages/irc/client.py", line 68, in <module>
    from jaraco.functools import Throttler
  File "/home/julius/.local/lib/python2.7/site-packages/jaraco/functools.py", line 9, in <module>
    from backports.functools_lru_cache import lru_cache
ImportError: No module named backports.functools_lru_cache

#!python

python irccat.py 
Traceback (most recent call last):
  File "irccat.py", line 14, in <module>
    import irc.client
  File "/home/julius/.local/lib/python2.7/site-packages/irc/client.py", line 68, in <module>
    from jaraco.functools import Throttler
  File "/home/julius/.local/lib/python2.7/site-packages/jaraco/functools.py", line 9, in <module>
    from backports.functools_lru_cache import lru_cache
ImportError: No module named backports.functools_lru_cache

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• Bitbucket: https://bitbucket.org/jaraco/irc/issue/66
• Originally reported by: steven meier
• Originally created at: 2015-09-26T07:52:56.763

[jaraco]

The issue lies with how backports.functools_lru_cache is resolved as a dependency. The package is required conditionally on the Python version being 2.7. I suspect that the version of pip you have isn't honoring that dependency properly.

I just installed jaraco.functools with pip 7.1.2 and it installed backports.functools_lru_cache as required.

I suspect you either need to upgrade pip or install backports.functools_lru_cache manually (i.e. pip install backports.functools_lru_cache).

Let me know if that doesn't solve it.

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Original comment by: Jason R. Coombs

[jaraco]

Thanks very much, installing it manually solved it. jessis's pip version is 1.5.7. however that came to be.

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Original comment by: steven meier

[jaraco]

see answer 1

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Original comment by: steven meier