exec() — Python Technical Interview Questions & Answers

exec()

exec()

  • 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).

Technical Interview Tip: Call exec() once and say what prints.

Code Examples for exec()

Example

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

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

How to Explain exec() to an Interviewer

Explain exec() as if you are teaching a junior — definition, then one tiny script.

exec() is built-in — no import. One call + exact output.

What does the example print, and why?

exec() — output: 3

What mistake do freshers make with exec()?

Wrong type → TypeError.