speed up execution of python code code example

Example 1: how to speed up python code

Speed Up Compile Time:

1. Use correct data structure
2. Try to minimize use of for loop
3. Use less global variables

Example 2: how to find the speed of a python program

import time
t0= time.clock()
print("Hello")
t1 = time.clock() - t0
print("Time elapsed: ", t1 - t0) # CPU seconds elapsed (floating point)