A recurring method for finishing code before deadline.

A base class used for modification.

A reusable solution to a recurring problem.

A sequence of steps that ensure that code conforms to PEP 8.

A consistent level of accuracy will be used for this value throughout the code.

If the value is replaced by another, it is easy to find all places where it is used in the code.

Developers reading the code will easily understand what the 1.618… represents because it has a name in the code such as  VALUE_GOLDEN_RATIO

If the value gets used many times, the code will run significantly faster when using the constant design pattern.

NUMBER_OF_COLORS = 3
print("Choose a color:")
for color in ["red", "green", "yellow"]:
    print(color)
for ii in range(0, NUMBER_OF_COLORS):
    input_color = input()
    if input_color not in ["red", "green", "yellow"]:
        print("oops")
        exit()

COLORS_FOR_MODULE = ["red", "green", "yellow"]
print("Choose a color:")
for color in COLORS_FOR_MODULE:
    print(color)
for ii in range(0, len(COLORS_FOR_MODULE)):
    input_color = input()
    if input_color not in COLORS_FOR_MODULE:
        print("oops")
        exit()

COLOR_1 = "red"
COLOR_2 = "green"
COLOR_3 = "yellow"
print("Choose a color:")
for color in [COLOR_1, COLOR_2, COLOR_3]:
    print(color)
for ii in range(0, 3):
    input_color = input()
    if input_color not in [COLOR_1, COLOR_2, COLOR_3]:
        print("oops")
        exit()