Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
136 views
in Technique[技术] by (71.8m points)

python - Remove Last instance of a character and rest of a string

If I have a string as follows:

foo_bar_one_two_three

Is there a clean way, with RegEx, to return: foo_bar_one_two?

I know I can use split, pop and join for this, but I'm looking for a cleaner solution.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)
result = my_string.rsplit('_', 1)[0]

Which behaves like this:

>>> my_string = 'foo_bar_one_two_three'
>>> print(my_string.rsplit('_', 1)[0])
foo_bar_one_two

See in the documentation entry for str.rsplit([sep[, maxsplit]]).


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...