Code jam Affrical qualification round

reverse_sentence.py

import collections

def process(line, case):
    words = line.split(' ')
    n = len(words)
    output = "Case #" + str(case) + ": "
    if n == 1:
        return output + words[0]

    for i in range(n):
        output +=  words[n -1-i] + " "
    return output

def process2(line, case):
    words = line.split(' ')
    output = "Case #" + str(case) + ":"
    words.reverse()
    return output + " ".join(words)


def process3(line, case):
    dq = collections.deque(line.split(' '))
    dq.reverse()
    return "Case #" + str(case) + ": " + " ".join((list(reversed(dq))))

def main():
    with open("B-large-practice.in", "r") as fd:
        n = fd.readline().strip('\n')
        for i in range(int(n)):
            print(process(fd.readline().strip('\n'), i + 1))

if __name__ == "__main__":
    main()