pinject

library0.15.3pypypi✓ verified 84d ago

A pythonic dependency injection library for Python, inspired by Guice. Current version is 0.15.3 (last release on PyPI 0.14.1 but GitHub has 0.15.3). Development appears to be in maintenance mode with no recent releases.

web-framework

pip install pinject

github ↗package ↗

INSTALL

IMPORT

SIG · PINJECT

pinject

web-frameworkpythonv0.15.3

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.

new_object_graph

✓ from pinject import new_object_graph

✗ import pinject new_object_graph = pinject.new_object_graph

Common but unnecessary to import the whole module

inject

✓ from pinject import inject

✗ from pinject import injectable

@injectable is deprecated since v0.10, use @inject

BindingSpec

✓ from pinject import BindingSpec

✗ from pinject import binding_spec

Correct class is BindingSpec, not binding_spec

Demonstrates basic injection: MyClass depends on DepClass; Pinject automatically injects the dependency.

import pinject class MyClass: @pinject.inject() def __init__(self, dep): self.dep = dep class DepClass: pass obj_graph = pinject.new_object_graph(binding_specs=[], modules=[DepClass]) obj = obj_graph.provide(MyClass) print(obj.dep.__class__.__name__) # DepClass

Debug

Known issues

gotchaPinject does not support Python 3.12+ due to removal of inspect.getargspec and other deprecated APIs. Pinject relies on inspect module details that are removed in Python 3.12.

fix

Use Python 3.11 or earlier, or switch to an actively maintained DI library like 'inject' or 'dependency-injector'.

affects: >=0.15.3

deprecated@injectable decorator is deprecated since v0.10. Use @inject instead.

fix

Replace @pinject.injectable with @pinject.inject() (note the parentheses).

affects: >=0.10

breakingIn v0.10, the default method names for BindingSpec were changed. Custom names can be set via 'configure_method_name' and 'dependencies_method_name' in new_object_graph.

fix

If you relied on default method names like 'configure', they still work. Only breaking if you overrode them and expected the old behavior.

affects: 0.10 to 0.15.3

Errors

Common errors & fixes

AttributeError: module 'pinject' has no attribute 'injectable'

Using deprecated @injectable decorator which was removed or aliased.

fix

Use @pinject.inject() instead of @pinject.injectable.

TypeError: 'module' object is not callable

Trying to invoke a module as a function, e.g., pinject.new_object_graph() but imported pinject incorrectly.

fix

Make sure you import correctly: from pinject import new_object_graph

TypeError: object() takes no arguments

Incorrectly using @inject without parentheses. @inject is a function that returns a decorator, so you need @inject() with parentheses.

fix

Use @pinject.inject() (with parentheses) on the __init__ method.

Upgrade

Version history

0.15.3latest on PyPI

Audit

Dependencies

No dependency data recorded yet.

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/google/pinject ↗

packagehttps://pypi.org/project/pinject/ ↗