python_technical_primitives.patterns.base¶

Base Specification class for DIY Specification pattern. No external dependencies - we own this code.

Attributes¶

T

Classes¶

Specification

Base class for all specifications.

Module Contents¶

python_technical_primitives.patterns.base.T¶

class python_technical_primitives.patterns.base.Specification¶

Bases: abc.ABC, Generic[T]

Base class for all specifications. Supports boolean composition (&, |, ~) and error tracking.

Example:

>>> class AdultSpec(Specification[User]):
...     description = "User must be 18+"
...     def is_satisfied_by(self, user):
...         return user.age >= 18
>>>
>>> spec = AdultSpec() & VerifiedEmailSpec()
>>> if spec(user):
...     process_user(user)

description: str = 'No description provided.'¶

abstract is_satisfied_by(candidate: T) → bool¶: Check if candidate satisfies specification.

property errors: Dict[str, str]¶: Get errors from last validation.