Stop python loop (List)

Im new to python. I have a loop

#todaystr gives string of sysdate e.g. 202307

if not os.path.exists(os.path.join(folder, todaystr )):
    os.makedirs(os.path.join(folder, todaystr ))

for f in  os.listdir(folder):
 
    if not ( f.startswith(todaystr) and f.endswith("hl7")) :
        
        break


    for g in os.listdir(folder)[:4] :
        if g.endswith('.hl7') and g.startswith (todaystr)    :
            shutil.move(os.path.join(folder, g),destination)

list data:

'202307',
'20230713-0955.hl7',
'20230713-0955.hl7', 
'20230713-0955.hl7', 
'20230713-0955.hl7', 
'20230713-0955.hl7',
'202307XY'

The loop should stop as soon as the list contains no data starting with "202307" and ending with "hl7". The Problem is that there is a folder "202307" so he stops instantly.

Thank you
Sorry for my bad english.

Im sure i have a Problem inside my if clause

It sounds like you want something like this:

import os

folder = "/path/to/folder"
for f in os.listdir(folder):
    print(f)
    if not (f.startswith("202307") and f.endswith("hl7")):
        break

You can use the glob function to get all the files that match the pattern, and then determine whether there is a value.

It can be imported from the glob module, or using the glob method of the pathlib.Path class.

import os

folder = "/path/to/folder"
print(glob.glob("202307*hl7", root_dir=folder))

"""
import pathlib

print(list(pathlib.Path(folder).glob("202307*hl7")))
"""