if-elif-else in python

Useful for if-else kind of conditional execution when we have more than two related conditional statements.

Syntax :

if expression 1:
   # Executes when the boolean expression 1 is true
elif expression 2:
   # Executes when the boolean expression 2 is true
elif expression 3:
   # Executes when the boolean expression 3 is true
else:
   # executes when the none of the above condition is true.
              

Block Diagram :

Example:

#script.py
n = 1

# Try these for these as well:
# n = 0
# n = -4.5

if n > 0:
    print("Positive number")
elif n == 0:
    print("Zero")
else:
    print("Negative number")

Positive number

Next topic is Nested-If in python