Conditions
and some recursion
Most Important Concepts
Put a colon at the end of if statements.
Indentation should happen automatically in IDE when syntax is correct.
Parentheses after if are optional in Python but required in most languages.
Indent code that you only want to happen when the condition is true.
Code that you only want to happen when the condition is false is indented under the keyword else followed by a colon.
It is good programming practice to have a trailing else to handle all other options.
Recursion, in general, means an algorithm that can be applied repeatedly. In software, it is a module (function) that calls itself.
Sample Program
# Prof. Vanselow
# An integration of everything I have learned about programming
print("Welcome to my Integration Project!")
print("Enter the choice for what you would like to see")
print("1. Area calculator")
print("2. Output formatting")
print("5. Quit")
userChoice = int(input())
if userChoice == 1:
# side is a variable
# a variable is a name for a location in memory
side = int(input("Enter the length of the side of a square to get the area:"))
area = side * side
print(area)
# You could also do print(side * side)
elif userChoice == 2:
print("Output can be formatted to two decimal places with format(variableName, '.2f')")
price = 599.9999
print("For example, 599.999 becomes:", format(price, '.2f'))
else:
print("Invalid selection. Exiting.")
