Python group by part of a string

Question

So I'm looking at names of files and some of them have _good and _new suffix at the end. I need to move these files but when I come across a file that has two versions, _good and _new, I only wan the _new files to move.

Here's an example of file names:

student_homework_good
student_homework_new
house_work_good
school_work_good
commute_good

From these files, I don't want student_homework_good to move because student_new exists. The file names are stored in a list: my_files[]

Any suggestions would be welcomed.

My suggestion would be to give this a crack and edit the question with a minimal reproducible example of your code and where you are running into an issue. — r.ook
– r.ook, Commented Jun 1, 2020 at 22:04
@fafz what you mean when you are saying move, also where you want to move it? — snehil
– snehil, Commented Jun 1, 2020 at 22:10

Giorgi Anakidze · Accepted Answer · 2020-06-01 22:18:58Z

1

It seems pretty easy. All you need to do, is to check the existence of _new in file name, like

listOfFiles = ['student_homework_new', 'student_homework_good', 'commute_good']
for i in listOfFiles:
    if '_new' in i:
        # code for movement to another directory

Any other _good files will remain in the same directory.

If you only want to group them by names, you could do something like

goodFiles = [i for i in os.listdir('yourdirectory') if '_good' in i]
newFiles  = [i for i in os.listdir('yourdirectory') if '_new' in i]

After grouping, you can move whatever you want to any folder of course.

edited Jun 1, 2020 at 22:18

answered Jun 1, 2020 at 22:04

Giorgi Anakidze

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1 Comment

fafz Over a year ago

Thank you, I set up the loop the way you suggested and I'm able to select just the new files when there are two versions.

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