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python求crc32值的方法

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Release: 2016-06-16 08:41:21
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本文实例讲述了python求crc32值的方法。分享给大家供大家参考。具体实现方法如下:

要想求CRC值,前面要import binascii
binascii.crc32(v)  求出了v的crc32值,这是一个long型,形如-1456387L,把这个值&0xffffffff得到的值形如48a213L的形式。
然后把这个值用16进制表示出来、

具体代码如下:

def _crc32(self, v): 
  """ 
  Generates the crc32 hash of the v. 
  @return: str, the str value for the crc32 of the v 
  """ 
  return '0x%x' % (binascii.crc32(v) & 0xffffffff) #取crc32的八位数据 %x返回16进制

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希望本文所述对大家的Python程序设计有所帮助。

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