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I installed python 2.7 with python brew. How do I install packages to work with it? I installed MySQLdb with synaptic, but I am unable to import it in python 2.7.

ElKamina
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4 Answers4

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Switch to 2.7:

pythonbrew switch 2.7

Curl and run get-pip to get the correct version of pip for 2.7:

curl -O https://raw.github.com/pypa/pip/master/contrib/get-pip.py
python get-pip.py

This will install the version of pip for 2.7. Check it by doing:

pip --version

Turn off pythonbrew:

pythonbrew off

Check the version of pip again, and it should be using the one for your default Python:

pip --version

If all is good, then switch back to 2.7 in pythonbrew and install mysql-python for 2.7:

pythonbrew switch 2.7
pip install mysql-python

Check to see that it is installed for 2.7:

pip freeze

Pip freeze will give you a listing of all installed libraries for the current active version of Python.

Leta
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You should try to install pip, which is a recursive acronym: Pip Installs Packages. This thread talks about installing it on windows, on Ubuntu I did sudo apt get install pip.

Ok, your problem is that "mysqldb" is not a python package. You need to use MySQLdb as a backend, or simply install sqlite3 and import that into Python, which is a module that mimics SQL. If you end up using an actual full-on database, like MySQLdb or PostgreSQL, you'll probably need to install SQLAlchemy, which is a Python module to interface with those.

Community
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rofls
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  • By the way Pip is python specific. – rofls Aug 16 '12 at 06:46
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    I did install pip. But 'pip install MySQLdb' is not working :( – ElKamina Aug 16 '12 at 06:48
  • Do other packages install correctly? Try BeautifulSoup or something if you don't have that already, which should be available through pip. – rofls Aug 16 '12 at 06:50
  • BeautifulSoup did get installed. But I still cannot import it in 2.7. It installs to default python dist that comes with ubuntu (2.65) . – ElKamina Aug 16 '12 at 06:57
  • Regarding mysqldb not being a python package, I am not sure. I can install it using synaptic and I can import it in python 2.65 (default python) – ElKamina Aug 16 '12 at 06:59
  • Hmmm. Ok, forget the Soup, see my above modifications and try installing sqllite3, if you're ok with testing that. As far as I experienced they're very similar on the front-end, so it's definitely fine for troubleshooting and just getting started. – rofls Aug 16 '12 at 07:00
  • Ok, try using `switch ` and then installing it, if you haven't already. Otherwise you're just installing it to your original version, Python 2.65, as pip is assigning it to your active version of Python. – rofls Aug 16 '12 at 07:09
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You need to install a version of pip for each Python version. Do you have easy install available? If so you can do 

easy_install-2.7 pip

Is there a specific reason that you are installing Python via home brew though? You do know that Ubuntu has as a package. 

sudo apt-get install python2.7

Will give you a version of Python that is already nicely set up.

I also believe that you should be trying to install the Python package called mysql-python.

pip install mysql-python

MySQLDB is not a Python package. It's the actual database.

aychedee
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Agree with @leta-rogers. However, I didn't have to install pip separately. Installing python using pythonbrew installed pip (for python 2.7) for me as well:

pythonbrew install 2.7
pythonbrew switch 2.7
pip install mysql-python
mandark
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