Python 字符串转数组与数组转字符串

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# @Author:
# @Date  : 2018/6/25

# 字符串转数组
a = "1,2,3,4,3,9,a"

arr = a.split(',')
print(arr)


# 数组转字符串
array = ['1', '2', '3', '4', '3', '9', 'a']

b = ','.join(array)
print(b)