Tic Toc Timer

TicToc.py

from time import time

class TicToc():
    '''
    Represents a simple timer-like, or stopwatch object.
    tic() starts the timer.
    toc() returns time (seconds) since tic() was called.
    '''

    def __init__(self):
        self.time_start = None

    def tic(self):
        self.time_start = time()
        return self.time_start

    def toc(self):
        if self.time_start is None:  # if you didn't call tic() yet
            return 0
        time_elapsed = time() - self.time_start
        return time_elapsed