import os
print os.name

from os import name
print name

# File calc.py

# Function defined in module
def average(list):

    return float(sum(list)) / len(list)

# Imports calc module
import calc

l = [23, 54, 31, 77, 12, 34]

# Calls the function defined in calc
print calc.average(l)

if __name__ == "__main__":
    # Code here will only be run 
    # if it is the main module
    # and not when it is imported by another program
    pass

"""
modutils => utility routines for modules
"""

import os.path
import sys
import glob

def find(txt):
    """find modules with name containing the parameter
    """

    resp = []

    for path in sys.path:
        mods = glob.glob('%s/*.py' % path)

        for mod in mods:
            if txt in os.path.basename(mod):
                resp.append(mod)

    return resp

from os.path import getsize, getmtime
from time import localtime, asctime

import modutils

mods = modutils.find('xml')

for mod in mods:

    tm = asctime(localtime(getmtime(mod)))
    kb = getsize(mod) / 1024
    print '%s: (%d kbytes, %s)' % (mod, kb, tm)