Is there any python module that would help me to convert a string into a 64-bit integer? (the maximum length of this string is 8 chars, so it should fit in a long).
我想避免写我自己的方法。
示例:
Input String Hex result (Base-10 Integer)
Y 59 89
YZ 59 5a 22874
...
http://docs.python.org/library/struct.html" rel="noreferrer"\\code>struct :
>>> s = YZ
>>> struct.unpack( >Q , x00 * (8 - len(s)) + s)
(22874,)
或更狡猾一点:
>>> int(s.encode( hex ), 16)
22874
我不认为有 内在的方法做到这一点, 但很容易烹饪起来:
>>> int("".join([hex(ord(x))[2:] for x in "YZ"]), 16)
22874
这经过16号基地,当然可以优化。我留下这个"作为练习"。
另一种方式:
sum(ord(c) << i*8 for i, c in enumerate(mystr))
>>> reduce(lambda a,b: a*256+b, map(ord, YZ ), 0)
22874
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