Python · Theory

exec()

Theory

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

exec() — output — 3. exec runs statements. Still unsafe on user text.

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

Exam tip

Call exec() once and say what prints.

# exec()
exec("x = 2\nprint(x + 1)")

exec() — output: 3. exec runs statements. Still unsafe on user text.