python实现基本进制转换的方法

# Parsing string with base into a number is easynum = int(str, radix)# We have to write our own function for outputting to string with arbitrary basedef itoa(num, radix): result = ""  while num > 0:  result = "0123456789abcdefghijklmnopqrstuvwxyz"[num % radix] + result  num /= radix return result