ImportError: No module named numpy

Question

I'm trying to run a program that requires Numpy to be installed. I thought it was, because if I try `sudo apt-get install python-numpy` it tells me that ``` sudo apt-get install python-numpy Reading package lists... Done Building dependency tree Reading state information... Done python-numpy is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. ``` But then when I go to install the program I'm trying to (within that programs directory, where setup.py is located) I get: ``` python setup.py install Traceback (most recent call last): File "setup.py", line 20, in from weblogolib import __version__ File "/home/chris/Documents/IS/Bioinformatics-Software/weblogo-3.3/weblogolib/__init__.py", line 108, in from numpy import array, asarray, float64, ones, zeros, int32,all,any, shape ImportError: No module named numpy ``` When I look in the Python-2.7.3/Lib/site-packages directory the only thing that's in there is a README file. Shouldn't…

Accepted Answer

You do not mention where you are running the commands. For the commands, I guess you are using `Ubuntu 12.10`.

In Ubuntu 12.10 the default is Python3 (check it with `python --version`). So that, when you ran `python setup ...`, you are running it with the default python available. For what it is worth, weblog 3.3 requires Python 2.5, 2.6 or 2.7.

Also, you can check where python-numpy was installed (check it with `dpkg -L python-numpy`).

My shot out of the blue would be:

```
$ python2.7 setup.py install
```

If you do not have installed python2.7, you should install it (likely, the shell is going to suggest it).

ImportError: No module named numpy

Solution

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