查找子字符串并在其之前获取子字符串

Question

我是python的新手，并且有一个字符串，其中每个字符串都包含PR，如下所示

This is my PR and its related to me.
This is your PR and its related to you.

我想找到PR并在其前面获取字符串，所以我的输出如下：

This is my 
This is your

Answer 1

您可以尝试使用.split()方法。代码如下：

>>> 'This is my PR and its related to me.'.split(' PR ')[0]
'This is my'

Answer 2

使用find函数查找`PR的索引，并将字符串切成该点。

s = 'This is my PR and its related to me.'
pos = s.find('PR')
print(s[:pos])

Answer 3

重新导入

字符串= re.findall（r“ ^ \ w +” PR） 打印（字符串）