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

供您参考，当将某些字符附加到字符串中任意位置固定的单词后(例如，通过添加后缀-ly将形容词更改为副词)，您可以将后缀放在行尾以提高可读性。要做到这一点，在replace()中使用split():

s="The dog is large small"
ss=s.replace(s.split()[3],s.split()[3]+'ly')
ss
'The dog is largely small'

试试这个:

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

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')

如2。X，使用str.replace()。

例子:

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

简单替换:. Replace (old, new, count)。

text = "Apples taste Good."
print(text.replace('Apples', 'Bananas'))          # use .replace() on a variable
Bananas taste Good.          <---- Output

print("Have a Bad Day!".replace("Bad","Good"))    # Use .replace() on a string
Have a Good Day!             <----- Output

print("Mom is happy!".replace("Mom","Dad").replace("happy","angry"))  #Use many times
Dad is angry!                <----- Output