python 进制转换

# -*- coding: utf-8 -*-

# 10进制转化为任何进制

from string import digits,ascii_lowercase,ascii_uppercase

Alphabat = digits + ascii_lowercase + ascii_uppercase

#print(Alphabat)
## 递归的方法
def ten2any(num,b=64):
    # 不满足assert条件的会直接被抛出异常
    assert b<=64 and b>1
    
    n,index = divmod(num,b)
    
    if n>0:
        return ten2any(n,b) + Alphabat[index]
    else:
        return  Alphabat[index]
    
## 迭代的方法

def ten2any1(n,b=64):
    assert n<=64 and n > 1
    
    res = ""
    while n > 0:
        n,index = divmod(n)
        res = Alphabat[index] + res
    
    return res

### 任何进制转化为10进制
def any2ten(s,base=62):
    assert base<=62 and base>1
    res = 0
    s = str(s)
    for i,n in enumerate(reversed(s)):
        index = Alphabat.index(n)
        res = res + index*pow(base,i)
    return res
    
if __name__ == "__main__":
    print(ten2any(16,17))
    print(any2ten(16,16))