The profile module is a standard Python profiler. And with the help of profile module we can run the profiler from the command line. For example you can see the below code.

#!/usr/bin/python
vara = 17
varb = 400
sum = vara + varb
print "vara + varb = %d" % sum
Now, try running cProfile.py over this file sum.py as follows 
$cProfile.py sum.py
vara + varb = 417
 4 function calls in 0.000 CPU seconds

Note: Ordered by: standard name

Output:

ncalls  tottime  percall  cumtime  percall filename:lineno
   1    0.000    0.000    0.000    0.000 :1()
   1    0.000    0.000    0.000    0.000 sum.py:3()
   1    0.000    0.000    0.000    0.000 {execfile}
   1    0.000    0.000    0.000    0.000 {method ......}