eval() — Python Technical Interview Questions & Answers

eval()

eval()

  • eval() is built into Python. You do not import it. Freshers only need one honest call and the printed result — not a long definition.
  • eval() — output: 5. eval runs a string as code — don’t use on user input.
  • Wrong type often raises TypeError. Empty values matter for bool/all/any. Don’t mix eval up with a similar name (sorted vs sort, int vs float).

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

Code Examples for eval()

Example

# eval()
print(eval("2 + 3"))

eval() — output: 5. eval runs a string as code — don’t use on user input.

How to Explain eval() to an Interviewer

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

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

What does the example print, and why?

eval() — output: 5

What mistake do freshers make with eval()?

Wrong type → TypeError.