Python 32bit or 64bit ?

Recently I moved my application from centOS 5 to centOS 7, which had 64bit python installed. It end up crashing my django application because some of the packages I was using were compiled in 32bit python and they weren't compatible.

First thing you need to check whether the python you are running is 32 bit or 64 bit. Here is the simple command to check it -

$ python

Python 2.7.5 (default, Nov 20 2015, 02:00:19) 

[GCC 4.8.5 20150623 (Red Hat 4.8.5-4)] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> import struct

>>> print struct.calcsize("P") * 8

64

That means its 64bit!