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Injection of dependencies for python 3

Project description

A bag of objects for Python

https://img.shields.io/pypi/v/pytel-inject.svg?style=flat https://travis-ci.com/mattesilver/pytel.svg https://codecov.io/gh/mattesilver/pytel/branch/master/graph/badge.svg

For when your object graph is too big

class A:
    def __init__(self, b: B):
        self.b = b

class B:
    pass

svc = {
    'a': A,
    'b': B,
}
context = Pytel(svc)
assert context.a.b == context.b

See usage for more cases

Features

  • Build a graph of objects based on init methods or factory functions

  • Initialize from
    • a dictionary of string to any of:
      • callable

      • type

      • value

    • Object containing any of:
      • object fields with objects or types (or callables)

      • class fields with objects or types (or callables)

      • methods

      • static methods

    • An Iterable of the above

  • Verify integrity of the dependency graph using type annotations

  • Recurrently resolve all dependencies at the first reference

  • Works as a Context Manager, on __exit__ close all objects that are Context Managers

Because of strict type checking this package is probably quite unpythonic.

Project details


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