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Python: How To Check If Key Exists In Dictionary?

Python has built-in functions to check if key exists: 1. using if-in statement 2. using get() , or setdefault() or , __contains__ 3. using h

Python includes several built-in functions for this purpose:

using if-in statement

using get() , or setdefault() or , __contains__

using has_key() (it’s obsolete now)

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