https://github.com/dscottboggs/python-delegate

Delegate properties on a class to the attributes of one of its members
https://github.com/dscottboggs/python-delegate

code-generation metaprogramming python

Last synced: about 1 month ago
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Delegate properties on a class to the attributes of one of its members

• Host: GitHub
• URL: https://github.com/dscottboggs/python-delegate
• Owner: dscottboggs
• License: mit
• Created: 2019-06-13T15:29:30.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2022-05-19T16:51:41.000Z (over 2 years ago)
• Last Synced: 2024-10-01T09:24:38.907Z (about 1 month ago)
• Topics: code-generation, metaprogramming, python
• Language: Python
• Size: 3.91 KB
• Stars: 4
• Watchers: 1
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Delegate

### A python library for delegation (the metaprogramming feature)

This library adds the `@delegate` decorator which may be used to delegate

attributes from an attribute of the existing class. For example:

```python

from delegate import delegate

class Parent:

    def __init__(self):

        self.a = "a"

        self.b = "b"

        self.d = "d"

# The delegate decorator makes .a and .b available on Child, through its

# "parent" attribute, as though Child had an a and b attribute itself.

@delegate("a", "b", to="parent")

class Child:

    def __init__(self):

        self.parent = Parent()

        self.c = "c"

instance = Child()

assert instance.a == "a"

raised = False

try:

    # But d is not available

    instance.d

except e:

    raised = True

assert raised

```