如何通过Python更改指定文件的MD5校验和？

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pythonimport os

def file_append(filename): with open(filename, 'a') as myfile: myfile.write(New content)

import os

def fileAppend(filename):
myfile = open(filename,'a')
myfile.write("####&&&&")
myfile.close

if __name__ == '__main__':
filename = 'test.rmvb'
fileAppend(filename)
print(filename + ' is Changed.')

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