问题：如何在python 3.x中使用string.replace（）
在python 3.x上不推荐使用string.replace（）。这样做的新方法是什么？
The string.replace() is deprecated on python 3.x. What is the new way of doing this?
回答 0
与2.x中一样，使用str.replace()。
例：
>>> 'Hello world'.replace('world', 'Guido')
'Hello Guido'
As in 2.x, use str.replace().
Example:
>>> 'Hello world'.replace('world', 'Guido')
'Hello Guido'
回答 1
replace()是<class 'str'>python3中的一种方法：
>>> 'hello, world'.replace(',', ':')
'hello: world'
replace() is a method of <class 'str'> in python3:
>>> 'hello, world'.replace(',', ':')
'hello: world'
回答 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
The replace() method in python 3 is used simply by:
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
回答 3
您可以使用str.replace（）作为链str.replace（） 。假设您有一个类似的字符串，'Testing PRI/Sec (#434242332;PP:432:133423846,335)'并且您想要将所有'#',':',';','/'符号替换为'-'。您可以通过这种方式（常规方式）进行替换，
>>> str = 'Testing PRI/Sec (#434242332;PP:432:133423846,335)'
>>> str = str.replace('#', '-')
>>> str = str.replace(':', '-')
>>> str = str.replace(';', '-')
>>> str = str.replace('/', '-')
>>> str
'Testing PRI-Sec (-434242332-PP-432-133423846,335)'
或这样（str.replace（）的链）
>>> str = 'Testing PRI/Sec (#434242332;PP:432:133423846,335)'.replace('#', '-').replace(':', '-').replace(';', '-').replace('/', '-')
>>> str
'Testing PRI-Sec (-434242332-PP-432-133423846,335)'
You can use str.replace() as a chain of str.replace(). Think you have a string like 'Testing PRI/Sec (#434242332;PP:432:133423846,335)' and you want to replace all the '#',':',';','/' sign with '-'. You can replace it either this way(normal way),
>>> str = 'Testing PRI/Sec (#434242332;PP:432:133423846,335)'
>>> str = str.replace('#', '-')
>>> str = str.replace(':', '-')
>>> str = str.replace(';', '-')
>>> str = str.replace('/', '-')
>>> str
'Testing PRI-Sec (-434242332-PP-432-133423846,335)'
or this way(chain of str.replace())
>>> str = 'Testing PRI/Sec (#434242332;PP:432:133423846,335)'.replace('#', '-').replace(':', '-').replace(';', '-').replace('/', '-')
>>> str
'Testing PRI-Sec (-434242332-PP-432-133423846,335)'
回答 4
试试这个：
mystring = "This Is A String"
print(mystring.replace("String","Text"))
Try this:
mystring = "This Is A String"
print(mystring.replace("String","Text"))
回答 5
仅供参考，将一些字符附加到字符串内任意位置固定的单词（例如，通过添加后缀-ly来将形容词更改为副词）时，可以将后缀放在行的末尾以提高可读性。为此，请split()在内部使用replace()：
s="The dog is large small"
ss=s.replace(s.split()[3],s.split()[3]+'ly')
ss
'The dog is largely small'
FYI, when appending some characters to an arbitrary, position-fixed word inside the string (e.g. changing an adjective to an adverb by adding the suffix -ly), you can put the suffix at the end of the line for readability. To do this, use split() inside replace():
s="The dog is large small"
ss=s.replace(s.split()[3],s.split()[3]+'ly')
ss
'The dog is largely small'
回答 6
ss = s.replace(s.split()[1], +s.split()[1] + 'gy')
# should have no plus after the comma --i.e.,
ss = s.replace(s.split()[1], s.split()[1] + 'gy')
ss = s.replace(s.split()[1], +s.split()[1] + 'gy')
# should have no plus after the comma --i.e.,
ss = s.replace(s.split()[1], s.split()[1] + 'gy')
