Set membership (in operator)

value in my_set

• value: This is the element you want to check for membership.
• my_set: This is the set you want to search within.

• The value is converted into a hash key using the hash function.
• The hash table is searched using this key to locate the corresponding element (if it exists).
• If the element is found, the in operator returns True. Otherwise, it returns False.

fruits = {"apple", "banana", "orange"}

# Check if "apple" is in the set
is_apple_present = "apple" in fruits
print(is_apple_present)  # Output: True

# Check if "grape" is in the set
is_grape_present = "grape" in fruits
print(is_grape_present)  # Output: False

• Validating user input: You can check if a user's input (like a chosen option) is a valid element within a set of allowed options.
• Finding common elements: You can iterate through multiple sets and use the in operator to identify elements present in both sets.
• Data analysis tasks: You can use the in operator to check if specific values exist within a dataset stored as a set.