"""
Provides decorator function "profile" that counts calls and cumulative execution time for all
decorated functions for the duration of an interpreter session.
"""

__author__ = 'A student in CS 20P, someone@jeff.cis.cabrillo.edu'

import time


def profile(function):
  """
  Decorates a function so that the number of calls and cumulative execution time of all calls can
  be reported by call_count() and cumulative_time(), respectively. Execution time is measured by
  calling time.perf_counter() before and after a call to the decorated function.
  """
  pass  # TODO


def call_count(function):
  """
  Returns the number of times a given function has been called during this interpreter session,
  assuming the function has been decorated by profile().
  """
  pass  # TODO


def call_counts():
  """
  Returns a dictionary mapping functions decorated by profile() to the number of times they have
  been called during this interpreter session.
  """
  pass  # TODO


def cumulative_time(function):
  """
  Returns the cumulative amount of time (in seconds) that have been spent executing calls to a given
  function during this interpreter session, assuming the function has been decorated by profile().
  """
  pass  # TODO


def cumulative_times():
  """
  Returns a dictionary mapping functions decorated by profile() to the cumulative amount of time (in
  seconds) that have been spent executing calls to a given function during this interpreter session.
  """
  pass  # TODO