Python中eval函数的作用

eval

eval函数就是实现list、dict、tuple与str之间的转化str函数把list，dict，tuple转为为字符串# 字符串转换成列表a = "[[1,2], [3,4], [5,6], [7,8], [9,0]]"print(type(a))b = eval(a)print(b)

# 字符串转换成字典a = "{1: ‘a‘, 2: ‘b‘}"print(type(a))b = eval(a)print(type(b))print(b)

# 字符串转换成元组a = "([1,2], [3,4], [5,6], [7,8], (9,0))"print(type(a))b=eval(a)print(type(b))print(b)

原文地址：https://www.cnblogs.com/hanfe1/p/10548016.html