Python Forum

Greetings!
I'm trying to copy files if the file name has a digit and it is in the range of 0-3.
files in a directory go like this:
file.txt
file-1.txt
file-2.txt
file-3.txt
...
file-50.txt
the snippet I have does not print anything for some reason.

from pathlib import Path
import re

dr ='C:\01'
for ef in Path(dr).iterdir() :
    fn = Path(ef).stem
    #print(f" Names -> {fn}")
    num = re.findall(r'\d+', fn) 
    #print(f" Digit -> {num} - {fn}")
    if num in range(0,3) :
        print(f" File to copy -> {ef}")

Thank you!

If you un-comment your debug line (9), you should be able to see what's going on: num is a list object and as such, the if at line 10 is never going to return True.

Also, if/when the num list is populated, it's populated with a str object, so there's that also.

I missed that part! Thank you for pointing!

It will never find folder C:\01

>>> dr ='C:\01'
>>> dr
'C:\x01'

See the problem?
So like this.

>>> dr = r'C:\01'
>>> dr
'C:\\01'
>>> # Or 
>>> dr = 'C:/01'
>>> dr
>>> 'C:/01'

To show a way with regex.

>>> import re
>>> 
>>> s = 'file-1.txt'
>>> re.search(r'.*[1-3]', s)
<re.Match object; span=(0, 6), match='file-1'>
>>> s = 'file-3.txt'
>>> re.search(r'.*[1-3]', s)
<re.Match object; span=(0, 6), match='file-3'>
>>> s = 'file-5.txt'
>>> re.search(r'.*[1-3]', s)
>>> #No match

Then like this.

from pathlib import Path
import re

dr = r'C:\bar'
for ef in Path(dr).iterdir():
    if re.search(r'.*[0-3]', ef.stem):
        print(ef)

Output:
C:\bar\file-1.txt
C:\bar\file-2.txt
C:\bar\file-3.txt

I still cannot find files in range.

    for enum in num :        
        if enum in range(0,3) :
           print(f" File to copy -> {ef}")

I got your script to work by altering it a little, to match my system, so you may want to take note of what @snippsat has posted

This is is what I've run:

from pathlib import Path
import re

dr = '/home/rob/Desktop/python/temp'
for ef in Path(dr).iterdir():
    fn = Path(ef).stem
    num = re.findall(r'\d+', fn)
    if num:
        num = int(num[0])
    if num in range(0, 3):
        print(f" File to copy -> {ef}")

Output:
 File to copy -> /home/rob/Desktop/python/temp/file-2
 File to copy -> /home/rob/Desktop/python/temp/file-1

snippsat, thank you for the snipped!
For some reason, the snippet also prints other files that start with digits "1", "2" or "3"
Like file-33.txt and so on...

rob101! It works!
You are oficcialy DA MAN now!
Of course "snippsat" is DA BOSS but you are OK too!

Thank you guys!

(Nov-23-2022, 11:09 PM)tester_V Wrote: [ -> ]Like file-33.txt and so on...

Change regex to this.

if re.search(r'.*\b[1-3]\b', ef.stem):

Well 'snippsat', you are DA MAN too brother... DA MAN!