timeit.py

from __future__ import print_function
import gc
import sys
import time

class TimeIt(object):

    def __init__(self, scope_name="", fd=sys.stdout):
        self._start = None
        self._fd = fd
        self._fmt = 'block took {{secs:.5f}} seconds to run [{}]'.format(scope_name)

    def __enter__(self):
        # run the garbage collector
        # then disable it so it won't tamper with the measurments
        gc.collect()
        gc.disable()
        self._start = time.time()

    def __exit__(self, exc_type, exc_val, exc_tb):
        now = time.time() - self._start
        print(self._fmt.format(secs=now).strip(), file=self._fd)

        # enable garbage collection after we're done with measurments
        gc.enable()