If statements can be used to evalute an expression. Example of checking if a variable called number is positive:

if number > 0:
  print(f"{number} is positive")

Make sure to indent each line in the body of the if statement. Let's also print something if the number is negative. To do that, add an elif statement, which is short for else if:

if number > 0:
  print(f"{number} is positive")
elif number < 0:
  print(f"{number} is negative")

The elif statement runs only if the previous if statement is false. Let's also print something if the number is 0. To do that, add an else statement:

if number > 0:
  print(f"{number} is positive")
elif number < 0:
  print(f"{number} is negative")
else:
  print("0 is not positive or negative")

A few notes about if statements:

• An if statement must start with the if keyword, and there can be one only
• You can have as many elif statements as you want after an if statement
• There can be one else statement only, and it must be at the very end of the if and elif statements