如何在Python3.x中使用string.replace（）

Answer 1

在2.x中，使用^{}。

示例：

>>> 'Hello world'.replace('world', 'Guido')
'Hello Guido'

还要注意，点绑定比字符串连接强，即使用括号：（'Hello'+'world'）.replace（'world'，'Guido'）

Answer 2

python 3中的replace（）方法仅用于：

a = "This is the island of istanbul"
print (a.replace("is" , "was" , 3))

#3 is the maximum replacement that can be done in the string#

>>> Thwas was the wasland of istanbul

# Last substring 'is' in istanbul is not replaced by was because maximum of 3 has already been reached

Answer 3

replace()是Python3中<class 'str'>的一种方法：

>>> 'hello, world'.replace(',', ':')
'hello: world'