pyflection

Python3

Matt Andrzejczuk 2018

Declaring and modifying classes dynamically using strings. When many classes in your project share the same property labels, Reflection can cut out dozens of lines of code in a single function.

Installation

Add to your `requirements.txt`:

-e git://github.com/MattAndrzejczuk/pyflection.git#egg=pyflection

or *

Install From Terminal

pip3 install git+https://github.com/MattAndrzejczuk/pyflection.git

How To Use:

my_classes.py

class Employee(PyflectiveEncoder):
    name = ""

Import Employee Dependency With Reflection:

EmployeeR = getattr(__import__("my_classes"),
                   "Employee")
obj_with_name = EmployeeR()
obj_with_name.__setattr__("name", "NEW NAME")

Import Employee Dependency Without Reflection:

from my_classes import Employee
obj_with_name = Employee()
obj_with_name.name = "NEW NAME"

Quick Start

unzip then run: python3 example.py

Assume you already have the following class:

from pyflection import PyflectiveEncoder

# Extremely Simple Class.
# only has two string properties.
class RESTfulLogin(PyflectiveEncoder):
    username = ""
    password = ""

    def __init__(self, user: str, pasw: str, *args, **kwargs):
        self.username = user
        self.password = pasw
        super(RESTfulLogin, self).__init__(*args, **kwargs)

DECLARE AND MANIPULATE RESTfulLogin WITHOUT IMPORTING THE DEPENDENCIES

from pyflection import NonPropertyStripper
import os

# 'user_mortal' cannot work without this import:
from dummy_reflective_class import RESTfulLogin

# 'user_phantom' imports it's dependencies dynamically
model_name = "RESTfulLogin"
lib = "dummy_reflective_class"
module = __import__(lib)
RESTfulLogin_Reflection = getattr(module, model_name)

# Optional, stripped_props is a list of the properties defined for RESTfulLogin.
raw_properties = dir(RESTfulLogin_Reflection)
stripped_props = NonPropertyStripper.clean(raw_properties)
# stripped_props = ["username", "password"]

user_phantom = RESTfulLogin_Reflection(user="phantom", pasw="123123")
user_mortal = RESTfulLogin(user="mortal", pasw="123123")

phantom_username = getattr(user_phantom, "username")
mortal_username = user_mortal.username

user_phantom.__setattr__("username", "ALTERED_Phantom")
user_mortal.username = "ALTERED_Mortal"

License

MIT

MattA9K/pyflection