Python Classes
Dataclasses, properties, and dunder methods in minimal form.
- python class
- dataclass
- property
- dunder
- classmethod
Python Classes
Dataclasses, properties, and dunder methods in minimal form.
Commands
| Command | What it does |
|---|---|
@dataclass class User: name: str | Boilerplate-free data class |
@property def total(self): | Computed read-only attribute |
def __repr__(self): | Debug-friendly representation |
@classmethod def from_dict(cls, d): | Alternative constructor |
class APIError(Exception): pass | Custom exception type |
Example
from dataclasses import dataclass
@dataclass
class User:
name: str
score: int = 0
print(User("ada", 95))FAQ
dataclass vs NamedTuple vs pydantic?
dataclass for logic + defaults; NamedTuple for tiny immutable records; pydantic for validated I/O schemas.
When to use @staticmethod?
Namespaced helpers needing neither instance nor class state — rare; module functions often suffice.
SSS
dataclass vs NamedTuple vs pydantic?
dataclass for logic + defaults; NamedTuple for tiny immutable records; pydantic for validated I/O schemas.
When to use @staticmethod?
Namespaced helpers needing neither instance nor class state — rare; module functions often suffice.
Python
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