Python
Python is a versatile, high-level programming language known for its readability and simplicity. It's the go-to language for data science, machine learning, automation, and increasingly for web development.
Key Characteristics
- Readable syntax: Whitespace-significant, clean code
- Dynamic typing: With optional type hints (3.5+)
- Batteries included: Extensive standard library
- Multi-paradigm: Object-oriented, functional, procedural
- Interpreted: No compilation step (though .pyc caching exists)
Common Use Cases
| Domain | Libraries/Frameworks |
|---|---|
| Web development | Django, Flask, FastAPI |
| Data science | pandas, NumPy, Jupyter |
| Machine learning | TensorFlow, PyTorch, scikit-learn |
| Automation | Scripting, Ansible, AWS SDK |
| API development | FastAPI, Django REST Framework |
Modern Python (3.10+)
# Type hints
def greet(name: str) -> str:
return f"Hello, {name}!"
# Dataclasses
from dataclasses import dataclass
@dataclass
class User:
name: str
email: str
active: bool = True
# Pattern matching (3.10+)
match status_code:
case 200:
return "OK"
case 404:
return "Not Found"
case _:
return "Unknown"
# Async/await
async def fetch_data(url: str) -> dict:
async with aiohttp.ClientSession() as session:
async with session.get(url) as response:
return await response.json()
What We Like
- Readability: Easy to learn, easy to maintain
- Versatility: From scripts to ML pipelines to web apps
- Scientific computing: Dominant in data science and AI
- Community: Vast ecosystem and helpful community
- FastAPI: Modern, fast async web framework
What We Don't Like
- Performance: Slower than compiled languages
- GIL: Global Interpreter Lock limits true parallelism
- Packaging: pip, conda, poetry - dependency management is fragmented
- Runtime errors: Dynamic typing means bugs hide until execution
- Deployment: Packaging Python apps can be complex
Best Practices
- Use type hints: Catch errors early with mypy
- Use virtual environments: Isolate project dependencies
- Follow PEP 8: Standard style guide
- Use modern Python: 3.10+ for latest features
- Consider FastAPI: For new web APIs