你可以使用str.replace()作为str.replace()的一个链。假设你有一个像'Testing PRI/Sec (#434242332;PP:432:133423846,335)'这样的字符串，你想用'-'替换所有的'#'，':'，';'，'/'符号。你可以这样替换它(正常方式)，

>>> string = 'Testing PRI/Sec (#434242332;PP:432:133423846,335)'
>>> string = string.replace('#', '-')
>>> string = string.replace(':', '-')
>>> string = string.replace(';', '-')
>>> string = string.replace('/', '-')
>>> string
'Testing PRI-Sec (-434242332-PP-432-133423846,335)'

或者这样(str.replace()的链)

>>> string = 'Testing PRI/Sec (#434242332;PP:432:133423846,335)'.replace('#', '-').replace(':', '-').replace(';', '-').replace('/', '-')
>>> string
'Testing PRI-Sec (-434242332-PP-432-133423846,335)'

python 3中的replace()方法被简单地用于:

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

Replace()是python3中<class 'str'>的一个方法:

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

你可以使用str.replace()作为str.replace()的一个链。假设你有一个像'Testing PRI/Sec (#434242332;PP:432:133423846,335)'这样的字符串，你想用'-'替换所有的'#'，':'，';'，'/'符号。你可以这样替换它(正常方式)，

>>> string = 'Testing PRI/Sec (#434242332;PP:432:133423846,335)'
>>> string = string.replace('#', '-')
>>> string = string.replace(':', '-')
>>> string = string.replace(';', '-')
>>> string = string.replace('/', '-')
>>> string
'Testing PRI-Sec (-434242332-PP-432-133423846,335)'

或者这样(str.replace()的链)

>>> string = 'Testing PRI/Sec (#434242332;PP:432:133423846,335)'.replace('#', '-').replace(':', '-').replace(';', '-').replace('/', '-')
>>> string
'Testing PRI-Sec (-434242332-PP-432-133423846,335)'

如2。X，使用str.replace()。

例子:

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

试试这个:

mystring = "This Is A String"
print(mystring.replace("String","Text"))