采采卷耳，不盈顷筐。嗟我怀人，寘彼周行。陟彼崔嵬，我马虺隤。我姑酌彼金罍，维以不永怀。陟彼高冈，我马玄黄。我姑酌彼兕觥，维以不永伤。陟彼砠矣，我马瘏矣。
我仆痡矣，云何吁矣！
?  PNG ?%k25u25%fgd5n!?  PNG ?%k25u25%fgd5n!?  PNG ?%k25u25%fgd5n!?  PNG ?%k25u25%fgd5n!#! /opt/alt/python35/bin/python3.5

"Replace tabs with spaces in argument files.  Print names of changed files."

import os
import sys
import getopt
import tokenize

def main():
    tabsize = 8
    try:
        opts, args = getopt.getopt(sys.argv[1:], "t:")
        if not args:
            raise getopt.error("At least one file argument required")
    except getopt.error as msg:
        print(msg)
        print("usage:", sys.argv[0], "[-t tabwidth] file ...")
        return
    for optname, optvalue in opts:
        if optname == '-t':
            tabsize = int(optvalue)

    for filename in args:
        process(filename, tabsize)


def process(filename, tabsize, verbose=True):
    try:
        with tokenize.open(filename) as f:
            text = f.read()
            encoding = f.encoding
    except IOError as msg:
        print("%r: I/O error: %s" % (filename, msg))
        return
    newtext = text.expandtabs(tabsize)
    if newtext == text:
        return
    backup = filename + "~"
    try:
        os.unlink(backup)
    ex