if condition:
    # code
elif condition:
    # code
else:
    # code

age = 20

if age >= 18:
    print("Adult")

Adult

age = 15

if age >= 18:
    print("Adult")
else:
    print("Minor")

Minor

marks = 85

if marks >= 90:
    print("Grade A")
elif marks >= 75:
    print("Grade B")
elif marks >= 50:
    print("Grade C")
else:
    print("Fail")

Grade B

age = 20
citizen = True

if age >= 18:
    if citizen:
        print("Eligible to vote")

Eligible to vote

a = 10

if a > 5: print("Greater")

a = 10

print("Even") if a % 2 == 0 else print("Odd")

age = 25
salary = 40000

if age > 18 and salary > 30000:
    print("Eligible")

age = 15
student = True

if age > 18 or student:
    print("Allowed")

logged_in = False

if not logged_in:
    print("Please login")

fruits = ["Apple", "Banana"]

if "Apple" in fruits:
    print("Found")

a = [1,2]
b = a

print(a is b)

True