python字符串包含字符串怎么写
时间: 2023-10-06 12:09:26 浏览: 202
要检查一个Python字符串是否包含另一个字符串,可以使用字符串类的__contains__()函数。这个函数接受一个参数,即要检查的子字符串。如果主字符串包含该子字符串,函数将返回True;如果不包含,则返回False。下面是一个示例代码:
```python
main_string = "Hello, world!"
***_string = "world"
if sub_string in main_string:
print("主字符串包含子字符串")
else:
print("主字符串不包含子字符串")
```
在这个例子中,我们将主字符串设置为"Hello, world!",子字符串设置为"world"。然后使用in关键字和__contains__()函数检查子字符串是否在主字符串中。如果返回True,则输出"主字符串包含子字符串";如果返回False,则输出"主字符串不包含子字符串"。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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