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Overview

This Python script automates the management of Python dependencies for a project by:

  1. Recursively scanning all Python files in the project directory.
  2. Extracting all imported packages.
  3. Checking for missing packages that are not installed in the current environment.
  4. Generating a requirements.txt file with all detected packages.
  5. Installing any missing packages using pip.

CodeQL Advanced - Python

Features

  • Recursive File Scanning: Automatically identifies all Python files in the specified project directory.
  • Dependency Detection: Extracts imported packages from the identified Python files.
  • Requirements File Generation: Creates or updates a requirements.txt file listing all detected dependencies.
  • Package Installation: Installs any missing dependencies using pip.

Prerequisites

  • Python 3.x installed on your system.
  • pip installed for package management.

How to Use

  1. Run the Script:

    • Save the script in the root directory of your project.
    • Execute the script: 
      python script_name.py

  2. Output:

    • The script performs the following steps:
      • Lists all Python files in the directory and subdirectories.
      • Extracts a list of all imported packages.
      • Writes the packages into a requirements.txt file.
      • Checks for missing packages and installs them if necessary.

Example Workflow

  • Step 1: You run the script in your project directory.
    • Example: Your project contains app.py and utils/helpers.py.
  • Step 2: The script scans all .py files and detects imports such as numpy, pandas, etc.
  • Step 3: It checks if these packages are installed in your environment.
  • Step 4: If any package is missing, it installs them using pip.
  • Step 5: A requirements.txt file is generated, containing: 
    numpy
pandas

Generated Files

  • requirements.txt: A text file listing all detected dependencies, suitable for use with pip install -r requirements.txt.

Error Handling

  • Skips files with encoding issues and notifies the user.
  • Handles ImportError for missing packages and attempts to install them.

Notes

  • The script may detect packages that are not explicitly needed if they are dynamically imported or unused in the project.
  • Use the generated requirements.txt file as a starting point and manually refine it as necessary.

License

This script is free to use and modify. No warranty is provided.