channel_overlap.py

#!/usr/bin/env python
'''
Copyright 2015 Michael Yanovich, yanovich.net
Licensed under the Eiffel Forum License 2.
'''

from sets import Set


def prepare_list(inc):
    inc_list = inc.split()
    out_list = list()
    for x in inc_list:
        temp = x
        if x.startswith('@') or x.startswith('+'):
            temp = x[1:]
        out_list.append(temp)
    return out_list


def main():
    num_of_channels = int(raw_input('Please enter # of channels: '))

    channel_nick_list = list()
    for x in range(1, num_of_channels + 1):
        temp = prepare_list(raw_input('Channel #%s: ' % (x)))
        channel_nick_list.append(temp)

    channel_nick_sets = list()
    for x in channel_nick_list:
        temp = Set(x)
        channel_nick_sets.append(temp)

    overlap = Set.intersection(*channel_nick_sets)

    print '\n\n'
    print overlap

if __name__ == '__main__':
    main()