# PyLeetPatterns
Master 14 essential algorithmic patterns with drop-in Python implementations for LeetCode and coding interviews.
### Production
```bash
pip install . # This installs the package normally into your Python environment.
```
## Development
### Setup
```bash
git clone https://github.com/yourusername/pyleetpatterns.git
cd pyleetpatterns
python3 -m venv .venv
source .venv/bin/activate
pip install -e . # This installs the package in "editable" mode, so changes tothe code are immediately reflected without reinstalling.
# or
pip install -e ".[dev]" # This installs the package in editable mode along with development tools (pytest, black, flake8, mypy).
```
The [dev] packages are already defined in the setup.py
file. Look at lines 30-37:
```py
extras_require={
"dev": [
"pytest>=7.0",
"black>=22.0",
"flake8>=4.0",
"mypy>=0.900",
]
},
```
This extras_require section in setup.py defines optional
dependencies. When you run:
```bash
pip install -e ".[dev]"
```
It will install:
1. The package itself in editable mode (-e .)
2. PLUS all the packages listed under the "dev" key:
- pytest (for testing)
- black (for code formatting)
- flake8 (for linting)
- mypy (for type checking)
You can add more development dependencies to this list if
needed. For example:
```py
extras_require={
"dev": [
"pytest>=7.0",
"black>=22.0",
"flake8>=4.0",
"mypy>=0.900",
"ipython>=8.0", # for interactive debugging
"pre-commit>=2.0", # for git hooks
]
},
```
You could also define other optional dependency groups like:
```py
extras_require={
"dev": [...],
"docs": ["sphinx>=4.0", "sphinx-rtd-theme"],
"viz": ["matplotlib>=3.0", "networkx>=2.0"],
}
```
Then install them with pip install -e ".[docs]" or pip
install -e ".[dev,docs]" for multiple groups.
### Testing
```bash
pytest
```
## Installation
```bash
pip install pyleetpatterns
```
## Quick Start
```python
from pyleetpatterns import PrefixSum, TwoPointers, SlidingWindow
# Example usage
ps = PrefixSum([1, 2, 3, 4, 5])
result = ps.range_sum(1, 3) # Sum from index 1 to 3
```
See full documentation in `leetcode-patterns-readme.md`
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