python-more_classes

Python - More Classes and Objects

Description

• tests/ - Main functions provided by Holberton School to test the files.

Tasks

• 0. Simple rectangle
  • 0-rectangle.py - Empty class Rectangle that defines a rectangle.
• 1. Real definition of a rectangle
  • 1-rectangle.py - Class Rectangle that defines a rectangle. Based on 0-rectangle.py with:
    • Private instance attribute: width.
    • Property: def width(self) to retrieve width.
    • Property setter: def width(self, value) to set width.
    • Private instance attribute: height.
    • Property: def height(self) to retrieve height.
    • Property setter: def height(self, value) to set height.
    • Instantiation with optional width and height: def __init__(self, width=0, height=0).
• 2. Area and perimeter
  • 2-rectangle.py - Class Square that defines a square. Based on 1-rectangle.py with:
    • Public instance method: def area(self) that returns the rectangle area.
    • Public instance method: def perimeter(self) that returns the rectangle perimeter.
• 3. String representation
  • 3-rectangle.py - Class Square that defines a square. Based on 2-rectangle.py with:
    • Special method __str__ to print the rectangle with the character #.
• 4. Eval is magic
  • 4-rectangle.py - Class Square that defines a square. Based on 3-rectangle.py with:
    • Special method __repr__ to return a string representation of the rectangle to be able to recreate a new instance by using eval().
• 5. Detect instance deletion
  • 5-rectangle.py - Class Square that defines a square. Based on 4-rectangle.py with:
    • Special method __del__ that prints the message Bye rectangle... when an instance of Rectangle is deleted.
• 6. How many instances
  • 6-rectangle.py - Class Square that defines a square. Based on 5-rectangle.py with:
    • Public class attribute number_of_instances that is initialized to 0, incremented for each new instantiation, and decremened for each instance deletion.
• 7. Change representation
  • 7-rectangle.py - Class Square that defines a square. Based on 6-rectangle.py with:
    • Public class attribute print_symbol that is initialized to #, used as symbol for string representation.
• 8. Compare rectangles
  • 8-rectangle.py - Class Square that defines a square. Based on 7-rectangle.py with:
    • Static method def bigger_or_equal(rect_1, rect_2) that returns the biggest rectangle based on the area.
• 9. A square is a rectangle
  • 9-rectangle.py - Class Square that defines a square. Based on 8-rectangle.py with:
    • Class method def square(cls, size=0) that returns a new Rectangle instance with width == height == size.

Author

• Felipe Villamizar - GitHub