gistfile1.py

import sys, os

def main():
    try:
        f1 = open('ff1.txt')
        f2 = open('ff2.txt')
        f3 = open('ff3.txt')
    except IOError, e:
        print "file open error", e
        sys.exit(1)

    l = []

    for line in f1.readlines():
        l.append(line)
    l.append('\n')
    for line in f2.readlines():
        l.append(line)
    l.append('\n')
    for line in f3.readlines():
        l.append(line)

    print l

    f4 = open('foo.txt', 'w')
    for line in l:
        f4.writelines(line)

    print os.getcwd() + '\\'+ f4.name

if __name__ == '__main__':
    main()