python 计算文件的md5值实例
较小文件处理方法:
import hashlib
import os
def get_md5_01(file_path):
md5 = None
if os.path.isfile(file_path):
f = open(file_path,'rb')
md5_obj = hashlib.md5()
md5_obj.update(f.read())
hash_code = md5_obj.hexdigest()
f.close()
md5 = str(hash_code).lower()
return md5
if __name__ == "__main__":
file_path = r'D:\test\test.jar'
md5_01 = get_md5_01(file_path)
print(md5_01)较大文件处理方法:
import hashlib
import os
def get_md5_02(file_path):
f = open(file_path,'rb')
md5_obj = hashlib.md5()
while True:
d = f.read(8096)
if not d:
break
md5_obj.update(d)
hash_code = md5_obj.hexdigest()
f.close()
md5 = str(hash_code).lower()
return md5
if __name__ == "__main__":
file_path = r'D:\test\test.jar'
md5_02 = get_md5_02(file_path)
print(md5_02)说明:对于同一个文件,两种方法计算得到的md5是一致的。
注:以上代码在Python 3.x版本测试通过。
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