python fish

main_fish.py

#!/usr/bin/env python
# coding=utf-8
import sys


def go(filename):
    f = open(filename)
    while 1:
        lines = f.readlines(100000)
        if not lines:
            break
        for line in lines:
            print(line)
    file.close()


def main():
    if len(sys.argv) < 2:
        print('usage: ' + sys.argv[0] + ' [filename]')
        return
    go(sys.argv[1])

if __name__ == '__main__':
    main()

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