Why installing package and module not same in Python?

Question

I want to install the Biopython module. So I used the command sudo apt-get install python-biopython. That installs the package. Now if I type import Bio in Python, the compiler cannot find the module giving ImportError: no module named Bio. Doesn't installing the package imply installing the module?

@Vignesh `import biopython` also gives the same import error `no module named 'biopython'` — Faustus, May 20 '15 at 04:59
What python version are you using? Currently `apt-get install` will install the python2 version. — Martin Konecny, May 20 '15 at 05:04

score 5 · Accepted Answer · edited May 23 '17 at 12:30

I'm using 3.4.0

Since you are using Python 3.4 it won't work because the Debian package you install via apt-get will only install the Python2.x version.

To install the Python 3 version, I recommend pip. Here how to install (Note that this package may not have a Python 3 version):

How to install pip with Python 3?

EDIT:

If you still cannot get the import working on python2, try the following:

import sys
sys.path.append('/usr/share/pyshared')
import Bio

According to this package's files list, the files are installed into a special directory I don't see in the default sys.path list

Why installing package and module not same in Python?

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