Python · Theory

int()

Theory

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

Output — 22 then 3. int() truncates toward zero.

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

Exam tip

Call int() once and say what prints.

# int()
print(int("21") + 1)
print(int(3.9))

Output: 22 then 3. int() truncates toward zero.