#!/usr/bin/env python
"""print size of every python file whose name starts with "m" """

import os

START_DIR = ".."  # start in root of student files  # <1>


def main():
    for currdir, subdirs, files in os.walk(START_DIR):  # <2>
        for file in files:  # <3>
            if file.endswith('.py') and file.startswith('m'):
                fullpath = os.path.join(currdir, file)  # <4>
                fsize = os.path.getsize(fullpath)
                print("{:8d} {:s}".format(fsize, fullpath))


if __name__ == '__main__':
    main()
