Python版more程序 [Python]

[root@lvdbing System]# cat more.py
#########################################################
# split and interactively page a string or file of text;
#########################################################

def more(text, numlines=15):
    lines = text.split('\n')
    while lines:
        chunk = lines[:numlines]
        lines = lines[numlines:]
        for line in chunk: print line
        if lines and raw_input('More?') not in ['y', 'Y']: break
     
if __name__ == '__main__':
    import sys # when run, not imported
    more(open(sys.argv[1]).read(), 10) # page contents of file on cmdline