dataclass-factory

library2.16pypypi✓ verified 89d ago

A utility class for creating instances of dataclasses from plain data (dicts, lists, etc.). Current version 2.16, released monthly or on demand. Supports parsing, validation, and serialization of nested dataclasses.

database

pip install dataclass-factory

github ↗homepage ↗

INSTALL

IMPORT

SIG · DATACLASS-FACTORY

dataclass-factory

databasepythonv2.16

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

Factory

✓ from dataclass_factory import Factory

Basic usage: load a dataclass from a dict.

from dataclasses import dataclass from dataclass_factory import Factory @dataclass class User: name: str age: int factory = Factory() data = {"name": "Alice", "age": 30} user = factory.load(data, User) print(user)

Debug

Known issues

gotchaFactory uses caching; reusing the same factory instance for different schemas may cause memory leaks or stale schemas. Use separate factories for distinct data structures.

fix

Create a new Factory per set of related dataclasses or call factory.clear() to reset caches.

affects: all

gotchaThe library does not automatically handle field aliases (e.g., JSON snake_case vs Python camelCase). You must define a parser or use field(name=...) in dataclass.

fix

Use parser.Parser with aliases or rename dataclass fields to match input keys.

affects: all

deprecatedThe old import `from dataclass_factory import Factory, schemas` is deprecated; schemas module is now internal.

fix

Use `from dataclass_factory import Factory` and rely on default schema generation.

affects: >=2.0

Errors

Common errors & fixes

AttributeError: 'Factory' object has no attribute 'load'

Using version <2.0 where the method was named 'parse' instead of 'load'.

fix

Upgrade to >=2.0 or use factory.parse() in older versions.

TypeError: __init__() got an unexpected keyword argument 'name'

Passing field names as kwargs when the dataclass has __post_init__ that expects different arguments.

fix

Ensure your dataclass fields match the input keys exactly. Use field(init=False) for computed fields.

Upgrade

Version history

2.16latest on PyPI · released Jul 20, 2022

Audit

Dependencies

No dependency data recorded yet.

Agent activity

11 hits · last 30 days

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Resources

githubhttps://github.com/tishka17/dataclass_factory ↗

homepagehttps://github.com/tishka17/dataclass_factory ↗