#python #pythontutorial #pythonprogramming

Membership operators = used to test whether a value or variable is found in a sequence
(string, list, tuple, set, or dictionary)
1. in
2. not in


EXAMPLE 1

word = "APPLE"

letter = input("Guess a letter in the secret word: ")

if letter in word:
print(f"There is a {letter}")
else:
print(f"{letter} was not found")


EXAMPLE 2

students = {"Spongebob", "Patrick", "Sandy"}

student = input("Enter the name of a student: ")

if student in students:
print(f"{student} is in this class")
else:
print(f"{student} is NOT in this class")


EXAMPLE 3

grades = {
"Sandy": 'A',
"Squidward": 'B',
"Spongebob": 'C',
"Patrick": 'D'
}

student = input("Enter the name of a student: ")

if student in grades:
print(f"{student}'s grade is {grades[student]}.")
else:
print(f"{student} is not in the dictionary")


EXAMPLE 4

email = "[email protected]"

if "@" in email and "." in email:
print("Valid email")
else:
print("Invalid email")