time travaller

[tony1812]

Hello, I am python newbie.

I would like to write a little code to keep track of a loop's start tim end end end time in seconds
pseudo code

import time
g_start_time = time.time() or time.clock()??? #store as global

while time:
    #do something
    end_time = time.time() or time.clock()??? #store as local
    if endtime - g_start_time == 4 #after loop excuted for 4 seconds
        #do foo
    else 
        #do bar

does this make sense? Als I am a bit confused the use of time.clock() and time.time(), in this case seems time.clock()maks more sense. Am I correct? Thanks