reqscanner

reqscanner is a lightweight Python utility script that scans your project for imported modules and generates a requirements.txt file based on what's actually used and installed.

It’s similar in concept to tools like pigar, but more minimal and customizable for personal or small-scale projects.

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Features

• Detects all imported modules using AST
• Matches import aliases (e.g. np → numpy, cv2 → opencv-python)
• Only includes third-party packages (excludes standard library)
• Skips virtual environments and cache folders
• Generates a clean requirements.txt
• Optional output file name and scan directory

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Usage

1. Basic scan in current directory:

python reqscanner.py

2. Scan a specific folder and set output file:

python reqscanner.py /path/to/project --output my-reqs.txt

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Example Output

numpy==1.24.3
pandas==1.5.2
scikit-learn==1.2.0
matplotlib==3.6.0

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Notes

• Only includes packages that are installed in your current Python environment.
• If a module is imported but not installed, it will be skipped with a warning.
• The alias map can be customized to support project-specific import styles. ``