Python · Theory

help()

Theory

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help() is built into Python. You do not import it. Freshers only need one honest call and the printed result — not a long definition.

help() — output — first line of len’s doc. help(len) is the interactive form.

Wrong type often raises TypeError. Empty values matter for bool/all/any. Don’t mix help up with a similar name (sorted vs sort, int vs float).

Exam tip

Call help() once and say what prints.

# help()
print(len.__doc__.split(".")[0])

help() — output: first line of len’s doc. help(len) is the interactive form.