Handy print with timing

chronoprint.py

import time

class ChronoPrint:
    """Usage:
        cp = ChronoPrint()
        foo()
        cp("foo")  # prints: 1.21 foo
        bar()
        cp("bar")  # prints: 0.72 bar
    """

    def __init__(self):
        self.last_lap = time.time()

    def __call__(self, *msg, **kwargs):
        now = time.time()
        print(round(now - self.last_lap, 2), *msg, **kwargs)
        self.last_lap = now