Recently, I had to do a find and replace over several individual python files.There are plenty of scripts out there which will accomplish this, but I was interested in something simple, and preferably a single line command. After a lot of Google-ing, I ended up finding this post, which does a great job of explaining how to do this in linux. The basic command is:
find . -name "\*.py" -print | xargs sed -i 's/foo/bar/g'
find . -name "*.py" is used to find all python files (recursively) in
your directory, and
xargs sed -i 's/foo/bar/g' is used to replace all
occurrences of ‘foo’ in the files with ‘bar’.
The link above gives a good explanation of each command (find, xargs, sed),
and how they combine together to create this useful single line command.