python replace
时间: 2023-10-12 21:09:53 浏览: 34
Sure, I can help you with that! The `replace()` method in Python is used to replace a specified substring with another string in a given string. Here's its syntax:
`string.replace(old, new[, count])`
- `old` is the substring you want to replace
- `new` is the string you want to replace it with
- `count` is an optional parameter that specifies the number of occurrences to replace. If not provided, all occurrences will be replaced.
For example:
```
string = "Hello world!"
new_string = string.replace("world", "Python")
print(new_string) # Output: "Hello Python!"
```
I hope that helps! Let me know if you have any more questions.
相关问题
pythonreplace
问题:pythonreplace是什么意思?
回答:在Python中,replace是一个字符串方法,用于将字符串中的某个子串替换为另一个字符串。它的语法是str.replace(old, new[, max]),其中old代表要被替换的子串,new代表要替换为的新字符串,max可选参数表示替换的次数限制。可以通过多次调用replace方法来进行多次替换,也可以使用字符串切片、translate方法或re.sub方法等其他替换字符串的方法。
Python replace
在Python中,`replace`是一个字符串方法,用于替换字符串中的指定部分。它接受两个参数:要替换的子字符串和替换后的字符串。以下是一个示例:
```python
sentence = "I like apples"
new_sentence = sentence.replace("apples", "oranges")
print(new_sentence)
```
输出:
```
I like oranges
```
在这个例子中,我们将原始句子中的"apples"替换为"oranges",并打印出新的句子。
`replace`方法还可以用来删除字符串中的特定部分。例如:
```python
sentence = "I don't like apples"
new_sentence = sentence.replace("don't ", "")
print(new_sentence)
```
输出:
```
I like apples
```
在这个例子中,我们将原始句子中的"don't "删除,并打印出新的句子。注意到我们在要删除的部分后面加了一个空格,以确保只删除完整的单词。