大众点评坐标解密样例代码

decrypt 大众点评 POI with Python3

#!/usr/bin/env python
# -*- encoding: utf-8 -*-

class test(object):
    def base36encode(self,number):
        """Converts an integer into a base36 string."""
        # From https://gist.github.com/kfr2/4287546
        import string

        ALPHABET  =  string.digits+string.ascii_lowercase

        if not isinstance(number,int):
            raise TypeError('This function must be called on an integer.')

        base36 = ''
        sign = ''

        if number < 0:
            sign = '-'
            number = -number

        if 0 <= number < len(ALPHABET):
            return sign + ALPHABET[number]

        while number != 0:
            number, i = divmod(number, len(ALPHABET))
            base36 = ALPHABET[i] + base36

        return sign + base36

    def decodeDzLonLat(self,string):
        C = string
        digi = 16
        add = 10
        plus = 7
        cha = 36
        I = -1
        H = 0
        B = ''
        J = len(C)
        G = ord(C[-1])
        C = C[:-1]
        J -= 1

        for E in range(J):
            D = int(C[E], cha) - add
            if D >= add:
                D = D - plus
            B += self.base36encode(D)
            if D > H:
                I = E
                H = D

        A = int(B[:I], digi)
        F = int(B[I+1:], digi)
        L = (A + F - int(G)) / 2
        K = float(F - L) / 100000
        L = float(L) / 100000
        return {'lat': K, 'lng': L}

#HEVIWRZVVJTJGJ =>39.87955,116.49699
a = test()
print(a.decodeDzLonLat('HEVIWRZVVJTJGJ'))