Python2.7.9(default,Dec102014,12:28:03)[MSCv.150064bit(AMD64)]onwin32>>>print'%.100f'%(9999.0/10000)0.9999000000000000110134124042815528810024261474609375000000000000000000000000000000000000000000000000从原理上阐述下为什么产生这样的误差?
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