I\'m a newbie and I needed the pySerial and feedparser module for my projects. I\'m running Mountain lion.
I followed the following tutorial so that I could upgrade
Here is something I learnt after a long time of having issues with pip when I had several versions of Python installed (valid especially for OS X users which are probably using brew to install python blends.)
I assume that most python developers do have at the beginning of their scripts:
#!/bin/env python
You may be surprised to find out that this is not necessarily the same python as the one you run from the command line >python
To be sure you install the package using the correct pip instance for your python interpreter you need to run something like:
>/bin/env python -m pip install --upgrade mymodule
I also had this problem. I noticed that all of the subdirectories and files under /usr/local/lib/python2.7/dist-packages/ had no read or write permission for group and other, and they were owned by root. This means that only the root user could access them, and so any user that tried to run a Python script that used any of these modules got an import error:
$ python
Python 2.7.3 (default, Apr 10 2013, 06:20:15)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import selenium
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named selenium
>>>
I granted read permission on the files and search permission on the subdirectories for group and other like so:
$ sudo chmod -R go+rX /usr/local/lib/python2.7/dist-packages
And that resolved the problem for me:
$ python
Python 2.7.3 (default, Apr 10 2013, 06:20:15)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import selenium
>>>
I installed these packages with pip (run as root with sudo). I am not sure why it installed them without granting read/search permissions. This seems like a bug in pip to me, or possibly in the package configuration, but I am not very familiar with Python and its module packaging, so I don't know for sure. FWIW, all packages under dist-packages had this issue. Anyhow, hope that helps.
Regards.
Below steps helped me fix this.
rm -rf env-name
python3 -m venv env-aide
Make sure to check the python version you are working on if it is 2 then only pip install works If it is 3. something then make sure to use pip3 install