Snakers 🐍

Interactive Python exercises with Ruff linting - Learn Python by fixing and completing code!

Installation

# Initialize a virtual enviorentment
python3 -m venv .venv
source .venv/bin/activate  # On Windows: .venv\Scripts\activate

# Install the package
python3 -m pip install snakers

Usage

Initialize the exercises

# Create exercises directory and files in current directory
snakers init

# Create in a specific directory
snakers init --target /path/to/directory

Run the next exercise

# If installed via pip
snakers run

# Or using the module
python -m snakers run

Run a specific exercise

snakers run 01_variables/01_basic_types

Watch mode (auto-check on file changes)

snakers watch

List all exercises

snakers list

Reset progress

snakers reset

Manage solutions

# List all saved solutions
snakers solutions list

# View a specific solution
snakers solutions show 01_basic_types

# Reset all solutions
snakers solutions reset

Get help

# General help
snakers help

# Topic-specific help
snakers help init
snakers help solutions

Exercise Structure

Exercises are organized in the exercises/ directory by topic:

• 00_intro/ - Introduction and environment setup
• 01_variables/ - Variables, types, basic operations
• 02_collections/ - Lists, dictionaries, tuples, sets
• 03_functions/ - Function definitions, parameters, returns
• 04_control_flow/ - Conditionals, loops, flow control
• 05_exceptions/ - Error handling and exceptions
• 06_classes/ - Object-oriented programming
• 07_functional/ - Functional programming concepts
• 08_file_io/ - File operations and data formats
• 09_modules_packages/ - Imports, packages, modules
• 10_advanced/ - Decorators, generators, advanced concepts
• 11_testing/ - Unit testing and test-driven development
• 12_concurrency/ - Threading, multiprocessing, async programming
• 13_data/ - Data processing and analysis
• 14_web/ - HTTP clients and web programming
• 15_stdlib/ - Standard library modules
• 16_project_management/ - Virtual environments, packaging, project structure
• 17_design_patterns/ - Common design patterns
• 18_regex/ - Regular expressions

Each exercise file contains:

• Learning objectives
• TODO items to complete
• Hints and tips
• Test cases

How It Works

1. Find TODOs: Each exercise has # TODO comments marking what you need to implement
2. Fix the code: Replace TODOs with working Python code
3. Pass Ruff checks: Your code must pass Ruff linting (style, formatting, basic errors)
4. Run successfully: The exercise file must execute without runtime errors
5. Progress tracking: Completed exercises are automatically tracked

Ruff Configuration

Snakers uses Ruff for:

• Code formatting
• Style checking (PEP 8)
• Error detection
• Import sorting
• Modern Python practices

Contributing

1. Fork the repository
2. Add new exercises in the appropriate topic directory
3. Follow the existing exercise format
4. Test your exercises
5. Submit a pull request

Exercise Template

"""
Exercise N: Title

Description of what the student will learn.

Tasks:
1. Task description
2. Another task

Hints:
- Helpful hint
- Another hint
"""

# TODO: Implementation task

def example_function():
    # TODO: Implement this function
    pass

if __name__ == "__main__":
    # Test code here
    pass

Happy coding! 🐍✨