Checking for Items with 'in'

Snippet

The 'in' operator is a highly readable way to check if a specific value exists inside a sequence like a list or a string.

snippet.py
python
guest_list = ["Alice", "Bob", "Charlie"]
if "Alice" in guest_list:
    print("Welcome!")

Breakdown

if "Alice" in guest_list:

Evaluates to True if the string is found anywhere in the list.

print("Welcome!")

Executes only if the membership check returned True.

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