import hashlibimport os,sysdef CalcSha1(filepath):  with open(filepath,'rb') as f:    sha1obj = hashlib.sha1()    sha1obj.update(f.read())    hash = sha1obj.hexdigest()    print(hash)    return hashdef CalcMD5(filepath):  with open(filepath,'rb') as f:    md5obj = hashlib.md5()    md5obj.update(f.read())    hash = md5obj.hexdigest()    print(hash)    return hashif __name__ == "__main__":  if len(sys.argv)==2 :    hashfile = sys.argv[1]    if not os.path.exists(hashfile):      hashfile = os.path.join(os.path.dirname(__file__),hashfile)      if not os.path.exists(hashfile):        print("cannot found file")      else      CalcMD5(hashfile)  else:    CalcMD5(hashfile)    #raw_input("pause")else:  print("no filename")