Regex Pattern Builder
Describe what you want to match and get a working regex with explanation.
Describe what you need and get a working Python script with explanation.
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Added
Mar 14, 2026
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[TASK]What the script should do
Example: bulk rename all files in a folder with a prefix and sequential number
[REQUIREMENTS]Any specific needs
Example: no external libraries, works on Windows and Mac
Bulk rename files in a folderimport os
import sys
def rename_files(folder, prefix, start_num=1):
Get all files in the folder, sorted files = sorted(os.listdir(folder))
for i, filename in enumerate(files, start=start_num):
Get file extension ext = os.path.splitext(filename)[1]
Create new name new_name = f'{prefix}_{i:03d}{ext}'
Rename os.rename(
os.path.join(folder, filename),
os.path.join(folder, new_name)
)
print(f'Renamed: {filename} -> {new_name}')
Usage: python rename.py /path/to/folder photorename_files(sys.argv[1], sys.argv[2])Paste the prompt into any of these AI tools.
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