python - string function in Python to extract between two characters

Question

I have the below string and I want to extract everything from <img... to the closing " after .jpg.

I tried the below, but it doesn't find just the first " but rather the very end.

Can anyone help?

In [14]: start = 'img src="'
In [15]: end = '"'
print string[string.find(start)+len(start):string.rfind(end)]

STRING:

 <p><a href="https://news.yahoo.com/us-ambassador-takes-post-united-nations-141833297.html"><img src="http://l1.yimg.com/uu/api/res/1.2/1f8jyGM.NfkxLb_.OgMaIQ--/YXBwaWQ9eXRhY2h5b247aD04Njt3PTEzMDs-/http://media.zenfs.com/en_us/News/afp.com/f5bbc19135065fcfff40e6ece9650f4ab225fa97.jpg" width="130" height="86" alt="New US ambassador takes up post at United Nations" align="left" title="New US ambassador takes up post at United Nations" border="0" ></a>US Ambassador Kelly Craft took up her post at the United Nations on Thursday, vowing to defend America's values and interests nine months after the departure of her high-profile predecessor Nikki Haley. Craft, 57, served previously as US ambassador to Canada where she was involved in negotiations on a new US Mexico Canada free trade agreement.<p><br clear="all">

标签： pythonpython-3.x

Answer 1

你可以像这样使用正则表达式，如果你确定它总是一样的。

<img.*?jpg\"

这是它的链接，Regex101 您可以根据需要进行调整。Regex 是它的正确工具，而不是 sting find 和 len 等等。