Python: sha1 tool, pythonsha1

Python: sha1 tool, pythonsha1

File1: sha1.py

File2: sha1.bat

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File1: sha1.py

import hashlibimport os,sys def CalcSha1(filepath):    with open(filepath,'rb') as f:        sha1obj = hashlib.sha1();        print '>',        while(True):            data = f.read(20971520)  #20M            print '.',            if (data == ''):                 break            sha1obj.update(data)        hash = sha1obj.hexdigest()        print ' END'        return hash.upper() if __name__ == "__main__":    if len(sys.argv)!=2 :        print("Usage: \n\tsha1 filename ")        exit(1)        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")            exit(1)                sha1 = CalcSha1(hashfile)    print 'SHA1: ', sha1

File2: sha1.bat

@python %~dp0sha1.py %*