Python实现计算文件MD5和SHA1的方法示例

#file md5
import sys;
import hashlib;
import os.path;
def GetFileMd5(strFile):
 file = None;
 bRet = False;
 strMd5 = "";
 strSha1 = "";
 try:
 file = open(strFile, "rb");
 md5 = hashlib.md5();
 sha1 = hashlib.sha1();
 strRead = "";
 while True:
  strRead = file.read(8096);
  if not strRead:
  break;
  else:
  md5.update(strRead);
  sha1.update(strRead);
 #read file finish
 bRet = True;
 strMd5 = md5.hexdigest();
 strSha1 = sha1.hexdigest();
 except:
 bRet = False;
 finally:
 if file:
  file.close()
 return [bRet, strMd5, strSha1];
def writFile(strInfo):
 file = None;
 file = open("E:\\1.txt", 'w+');
 file.write(strInfo);
 file.write("\n");
 if file:
 file.close();
if "__main__" == __name__:
  bOK , md5str1, sha1str1 = GetFileMd5("E:\\1.mp3");
  print(md5str1);
  md5All = md5str1 + "\t" + sha1str1;
  md5All += "\n";
  bOK , md5str2, sha1str2 = GetFileMd5("E:\\2.mp3");
  print(md5str2);
  writFile(md5str2 + "\t" +sha1str2);
  md5All += (md5str2 + "\t" + sha1str2);
  md5All += "\n";
  bOK , md5str3, sha1str3 = GetFileMd5("E:\\3.mp3");
  print(md5str3);
  writFile(md5str3 + "\t" +sha1str3);
  md5All += (md5str2 + "\t" + sha1str3);
  md5All += "\n";
  writFile(md5All);