Python hash编码（go hash编码）

id="中国人"

首先，go语言hash:

import (mmh3 "murmurhash3")
mmh3.Murmurhash3([]byte(id))

对应到Python hash编码，可以直接使用mmh3

import mmh3
mmh3.hash(id,signed=False)

其源码可以表示为

def sum32WithSeed(datas, seed=0):c1_32 = 0xcc9e2d51c2_32 = 0x1b873593h1 = seeddatas_bytes = datas.encode('utf-8')datas_bytes_len = len(datas_bytes)if datas_bytes_len == 0:return 0nblocks = datas_bytes_len // 4for id in range(datas_bytes_len):if id % 4 != 0 or id + 4 > datas_bytes_len:continuek1 = int.from_bytes(datas_bytes[id:id + 4], byteorder='little', signed=False)k1 *= c1_32k1 &= 0xffffffffk1 = (k1 << 15) | (k1 >> 17)k1 *= c2_32k1 &= 0xffffffffh1 ^= k1h1 = (h1 << 13) | (h1 >> 19)h1 = h1 * 4 + h1 + 0xe6546b64h1 &= 0xfffffffftail = datas_bytes[nblocks * 4:]tail_len = len(tail)k1 = 0for id in [3, 2, 1]:if tail_len >= id and id == 3:k1 ^= int.from_bytes(tail[2:3], byteorder='little', signed=False) << 16if tail_len >= id and id == 2:k1 ^= int.from_bytes(tail[1:2], byteorder='little', signed=False) << 8if tail_len >= id and id == 1:k1 ^= int.from_bytes(tail[0:1], byteorder='little', signed=False)k1 *= c1_32k1 &= 0xffffffffk1 = (k1 << 15) | (k1 >> 17)k1 *= c2_32k1 &= 0xffffffffh1 ^= k1h1 &= 0xffffffffh1 ^= datas_bytes_lenh1 ^= h1 >> 16h1 *= 0x85ebca6bh1 &= 0xffffffffh1 ^= h1 >> 13h1 *= 0xc2b2ae35h1 &= 0xffffffffh1 ^= h1 >> 16return h1def sum32(datas):return sum32WithSeed(datas, 0)print(sum32(id))