Pen-y-Fan

Learning Plan for Design Patterns and Principles of Good Design

These learning resources primarily focus on programming using Good Design Principles and Design Patterns

• There is an emphasis on learning using PHP, although most patterns are universal to every object orientated language.

dmmeteo

"""
Single Responsibility Principle
“…You had one job” — Loki to Skurge in Thor: Ragnarok
A class should have only one job. 
If a class has more than one responsibility, it becomes coupled. 
A change to one responsibility results to modification of the other responsibility.
"""

class Animal:
    def __init__(self, name: str):

samueljseay

// default exports
export default 42;
export default {};
export default [];
export default (1 + 2);
export default foo;
export default function () {}
export default class {}
export default function foo () {}

turtlemonvh

Multi-level arg parse

Shows how to structure a python app using arg parse that goes down many levels.

The "trick" is to

• add a subparsers S1[]
• add parsers P1[] to your subparser S1[x]
• add a new set of subparsers S2[] to one of those parsers P1[x]

tomvon

#Resizes an image and keeps aspect ratio. Set mywidth to the desired with in pixels.

import PIL
from PIL import Image

mywidth = 300

img = Image.open('someimage.jpg')
wpercent = (mywidth/float(img.size[0]))
hsize = int((float(img.size[1])*float(wpercent)))

valberg

# Extension of http://www.yilmazhuseyin.com/blog/dev/create-thumbnails-imagefield-django/

# Note: image_folder and thumbnail_folder are both a callable (ie. a lambda that does a '/'.join())

class Image(Media):
    image = models.ImageField(
        upload_to=image_folder
    )

    thumbnail = models.ImageField(