comparing function return assigning variable vs not.

func_return_compare.py

#!/usr/bin/python

from memory_profiler import profile
@profile
def func1(a):
    if a > 0:
        num = 1
    else:
        num = -1
    return num

#@profile
def func2(a):
    if a > 0:
        return 1
    else:
        return -1


func = [ func1, func2 ]

import cProfile
from timeit import Timer
import dis

for fun in func:
    print fun(100)
    t = Timer(lambda: fun(-1))
    print fun.__name__, cProfile.run('t.timeit(number=1000)')
    print fun.__name__
    print dis.dis(fun)
    print '-------'