Simple Post-Execution Message for Apps, print used Resources and Running Time (A.K.A. Uptime)

post_exec_message.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-


import sys, os
import logging as log
from datetime import datetime


try:
    import resource  # windows dont have resource
except ImportError:
    resource = None
start_time = datetime.now()


def make_post_execution_message(app=__doc__.splitlines()[0].strip()):
    """Simple Post-Execution Message with information about RAM and Time.
    >>> make_post_execution_message() >= 0
    True
    """
    ram_use = int(resource.getrusage(resource.RUSAGE_SELF).ru_maxrss *
                  resource.getpagesize() / 1024 / 1024 if resource else 0)
    ram_all = int(os.sysconf('SC_PAGE_SIZE') * os.sysconf('SC_PHYS_PAGES')
                  / 1024 / 1024 if sys.platform.startswith("linux") else 0)
    msg = "Total Maximum RAM Memory used: ~{0} of {1} MegaBytes.".format(
        ram_use, ram_all)
    log.info(msg)
    if start_time and datetime:
        log.info("Total Working Time: {0}.".format(
                 datetime.now() - start_time))
    return msg


if __name__ in '__main__':
    log.basicConfig(level=-1)  # basic logger
    make_post_execution_message()
    __import__("doctest").testmod(verbose=True, report=True, exclude_empty=1)

juan@z:~$ python2 temp.py 

INFO:root:Total Maximum RAM Memory used: ~20 MegaBytes.
INFO:root:Total Working Time: 0:00:00.000205.
Trying:
    make_post_execution_message() >= 0
Expecting:
    True
INFO:root:Total Maximum RAM Memory used: ~26 MegaBytes.
INFO:root:Total Working Time: 0:00:00.036104.
ok
1 items passed all tests:
   1 tests in __main__.make_post_execution_message
1 tests in 1 items.
1 passed and 0 failed.
Test passed.

juan@z:~$ python3 temp.py

INFO:root:Total Maximum RAM Memory used: ~20 MegaBytes.
INFO:root:Total Working Time: 0:00:00.000225.
Trying:
    make_post_execution_message() >= 0
Expecting:
    True
INFO:root:Total Maximum RAM Memory used: ~25 MegaBytes.
INFO:root:Total Working Time: 0:00:00.094710.
ok
1 items passed all tests:
   1 tests in __main__.make_post_execution_message
1 tests in 1 items.
1 passed and 0 failed.
Test passed.

juan@z:~$