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
623 views
in Technique[技术] by (71.8m points)

python - replace string in pandas dataframe

I have a dataframe with multiple columns. I want to look at one column and if any of the strings in the column contain @, I want to replace them with another string. How would I go about doing this?

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)

A dataframe in pandas is composed of columns which are series - Panda docs link

I'm going to use regex, because it's useful and everyone needs practice, myself included! Panda docs for text manipulation

Note the str.replace. The regex string you want is this (it worked for me): '.*@+.*' which says "any character (.) zero or more times (*), followed by an @ 1 or more times (+) followed by any character (.) zero or more times (*)

df['column'] = df['column'].str.replace('.*@+.*', 'replacement')

Should work, where 'replacement' is whatever string you want to put in.


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

...