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