A built in function is a function which ...

Question

Options

• Ais hidden from programmers.
• Bcomes with Python, and is an integral part of Python.
• Chas been placed within your code by another programmer.
• Dhas to be imported before use.

• A
  14% (3)
• B
  77% (17)
• C
  5% (1)
• D
  5% (1)

Explanation

Built-in functions are functions that come pre-packaged with Python itself - they are always available without any additional steps, making B correct. Examples include print(), len(), range(), and type(), which you can call immediately in any Python program.

Why the distractors are wrong:

• A is wrong because built-ins are fully visible and documented; they are not hidden - in fact, they are among the most well-known functions in Python.
• C describes a different concept: a function written by someone else and included in your codebase, which would just be a user-defined or third-party function.
• D describes a module or library function (like math.sqrt()), which requires an import statement - built-ins require no import at all.

Memory tip: Think "built-in = built into the language." If you've never written an import statement and a function still works, it's a built-in.

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