How to copy file based on partial filename in python

Question

I'm trying to copy certain .JPG files from my photocard to another directory. The files are named IMG_7853.JPG, IMG_7854.JPG, and so on (they range from IMG_0001.JPG to IMG_9999.JPG). If I want to copy all files greater than IMG_7853 what's the best approach in python. The code below works fine for listing all files in the directory, but I wasn't sure how to go about making the comparison based on the partial filename.

#! /bin/python
import re
import os

def copyphoto():
    path="/media/CANON_DC/DCIM"
    for root, dirs, files in os.walk(path):
        for name in files:
            if name.endswith(".JPG"):
                print name

What you need to do is extract the numeric portion, convert it to an integer, and make the comparison. — Gabe
– Gabe, Commented Aug 26, 2011 at 4:14

Ignacio Vazquez-Abrams · Accepted Answer · 2011-08-26 04:14:47Z

3

fnmatch does glob-style matching.

answered Aug 26, 2011 at 4:14

Ignacio Vazquez-Abrams

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Comments

ghostdog74 · Accepted Answer · 2011-08-26 04:27:33Z

2

...
   if name.endswith(".JPG") and int( name.split("_")[-1].split(".")[0] ) > 7853 :
...

answered Aug 26, 2011 at 4:27

ghostdog74

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1 Comment

matt_k Over a year ago

Thanks. Thought it would be harder than that.

Tony318 · Accepted Answer · 2011-08-26 04:17:24Z

1

I don't know python but you should be able to just compare them. As long as the files are strings and all start with IMG_ with no leading zeros, you should just be able to use IMG_7853.JPG > filename

answered Aug 26, 2011 at 4:17

Tony318

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3 Comments

matt_k Over a year ago

Sorry - I didn't post in my original question that there are leading zeros for certain filenames. I edited it to reflect this.

Gabe Over a year ago

@matt_k: Actally, the leading zeros are good. Go ahead and try Tony's suggestion. It will only work because of the leading zeros.

Tony318 Over a year ago

@matt_k Ah okay, Those leading zeros are perfect. When i mentioned leading zero's that would hurt you i meant more of "IMG_700.JPG" compared to "IMG_0705.JPG". In this case, your "IMG_0705.JPG" would actually be less than your "IMG_700.JPG". Since they all have 4 digit numbers though you won't run into this problem.

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