The folder location of audit2allow python script is external/selinux/prebuilts/bin/audit2allow

But when I try to run the script, I get this error:

Traceback (most recent call last):
File "/home/shobhit/Desktop/Code/aosp/msm8909_android/external/selinux/policycoreutils/audit2allow/audit2allow", line 24, in
import sepolgen.audit as audit
File "/home/shobhit/Desktop/Code/aosp/msm8909_android/prebuilts/python/linux-x86/2.7.5/lib/python2.7/site-packages/sepolgen/audit.py", line 20, in
import refpolicy
File "/home/shobhit/Desktop/Code/aosp/msm8909_android/prebuilts/python/linux-x86/2.7.5/lib/python2.7/site-packages/sepolgen/refpolicy.py", line 22, in
import selinux
File "/home/shobhit/Desktop/Code/aosp/msm8909_android/prebuilts/python/linux-x86/2.7.5/lib/python2.7/site-packages/selinux/__init__.py", line 28, in
_selinux = swig_import_helper()
File "/home/shobhit/Desktop/Code/aosp/msm8909_android/prebuilts/python/linux-x86/2.7.5/lib/python2.7/site-packages/selinux/__init__.py", line 24, in swig_import_helper
_mod = imp.load_module('_selinux', fp, pathname, description)
ImportError: /home/shobhit/Desktop/Code/aosp/msm8909_android/prebuilts/python/linux-x86/2.7.5/