如何用用户输入的单词替换用户输入的句子。str对象不是callab

Question

sentence = input ('Please enter a sentce: ')
change = input ('What word do you want to change: ')
replace = input ('What do you want to replace it with: ')
n_s = replace(change,replace)
print (n_s)

我有这个，但当我运行它说

n_s = replace(change,replace) TypeError:'str' object is not callable

Answer 1

sentence = input ('Please enter a sentce: ')
change = input ('What word do you want to change: ')
replace = input ('What do you want to replace it with: ')
n_s = sentence.replace(change,replace)
print(n_s)

#output:
Please enter a sentce: hello world bye
What word do you want to change: bye
What do you want to replace it with: bye-bye
hello world bye-bye

方法replace（）返回一个字符串的副本，在该字符串中出现的旧字符串已被替换为新字符串，可以选择将替换次数限制为最大值

语法：str.replace(old, new[, max])

• old—这是要替换的旧子字符串。你知道吗
• new—这是新的子串，它将替换旧的子串。你知道吗
• max−如果给定此可选参数max，则只替换第一次计数。你知道吗

Answer 2

下面是针对python3的更正代码。请注意，print语句前面最后一行的语法是n\u s=句子.替换（更换）

sentence = input ('Please enter a sentce: ')
change = input ('What word do you want to change: ')
replace = input ('What do you want to replace it with: ')
n_s = sentence.replace(change,replace)
print (n_s)

Answer 3

你想要：n_s = sentence.replace(change, replace)。它会给您一个类型错误，因为名为replace的变量是一个字符串，您试图像方法一样调用它。你知道吗