python 生成文件MD5码
pymd5.py的代码如下：#-*-coding:utf-8-*-
'''
Created on 2012-5-25
@author: kanpiaoxue
'''
import hashlib
import os
import sys
def printUsage():
print ('Usage: pymd5.py <filename>')
def createMD5(filePath):
if not os.path.isfile(filePath):
printUsage()
else:
tmpLength = 1024
m = hashlib.md5()
with open(filePath, 'rb') as f:
b = f.read(tmpLength)
while b != b'':
m.update(b)
b = f.read(tmpLength)
print filePath, ' MD5:\t', m.hexdigest().upper()
if __name__ == '__main__':
if 2 != len(sys.argv):
printUsage()
else:
f = sys.argv
createMD5(f)
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