Autocommenter

Small Python helpers to save a Facebook mobile-browser session to a pickle file and reuse that session to post comments on the Reels feed with undetected Chrome. Intended for personal automation only; you are responsible for complying with Meta’s terms and policies.

Requirements

• Python 3.9+ (tested with 3.9 on Windows)
• Google Chrome installed (version should match what undetected-chromedriver pulls in)
• Python packages (from repo root):

pip install -r requirements.txt

Project layout

Path	Purpose
pklgenerator.py	Opens Facebook mobile login, you sign in manually, then saves cookies + storage to a .pkl file
reel_comment.py	Loads one or more .pkl files, opens Reels, posts comments (mobile viewport / UA)
pklfiles/	Recommended folder for .pkl session files (e.g. facebook_login_data1.pkl, facebook_login_data2.pkl)

1. Save a session (pklgenerator.py)

1. Run:

   python pklgenerator.py

2. Log in manually in the browser that opens (m.facebook.com).

3. When finished, press Enter in the terminal.

4. By default, data is written to facebook_login_data.pkl in the current working directory.

To save into pklfiles/ with a custom name:

# Or change the script’s default, or call from a tiny wrapper:
python -c "from pklgenerator import save_facebook_session; save_facebook_session('pklfiles/account1.pkl')"

On Windows, if ChromeDriver cache errors appear (FileExistsError / WinError 183), pklgenerator.py already clears the usual undetected-chromedriver cache path before launch.

2. Comment on Reels (reel_comment.py)

Interactive (prompts for reel count and comment)

python reel_comment.py

Non-interactive

python reel_comment.py --reels 3 --comment "Hello!"

Multiple accounts (one browser, no restart)

• Put several *.pkl files under pklfiles/ (sorted by filename).
• Run without --pkl: every .pkl in that folder is processed in order.
  After each account finishes --reels comments, cookies/storage are cleared in the same window and the next PKL is applied.

python reel_comment.py --reels 2 --comment "Nice reel"

• Scan another directory:

  python reel_comment.py --pkl-dir D:\ks\autocommenter\pklfiles --reels 1 --comment "Hi"

• Pick specific files (order = order of flags):

  python reel_comment.py --pkl pklfiles\a.pkl --pkl pklfiles\b.pkl --reels 1 --comment "Hey"

Useful flags

Flag	Description
--pkl	One PKL path; repeat for multiple files (if omitted, all *.pkl in --pkl-dir are used)
--pkl-dir	Folder scanned when --pkl is omitted (default: pklfiles/ next to reel_comment.py)
--reels	How many different reels to comment on per account
--comment	Comment text (if omitted, you are prompted)
--url	Reel feed URL (default https://www.facebook.com/reel/; reloaded between reels to reduce sticking on one video)
--width / --height	Mobile viewport for device metrics (defaults match pklgenerator: 390×844)

Errors and debugging

• If a step fails, the script leaves the browser open and asks you to press Enter after inspecting the page (e.g. DevTools → Elements), then closes the browser.

Flow summary

1. Generate PKL(s) with pklgenerator.py (one run per account if you use multiple PKLs).
2. Place them in pklfiles/ (or pass explicit --pkl paths).
3. Run reel_comment.py with --reels and --comment (or answer prompts).

Disclaimer

Automation on Meta services can violate the Facebook Terms or trigger rate limits or security checks. Use only accounts you control, avoid spam, and prefer official APIs for anything commercial or at scale. This repository is provided as-is with no warranty.