Try/except ValueError

Convert user input to int inside try/except and show a friendly message.

7 lines 3 views 0 copies Updated May 23, 2026

errors try-except input

How it works

int() raises ValueError when the string is not a valid integer. Catch it near the conversion, not at the top of the program.

Give users actionable feedback — say what went wrong and what format you expect.

Avoid bare except: — catch specific exceptions so real bugs still surface.

Python

raw = "42"

try:
    value = int(raw)
    print(f"Parsed: {value}")
except ValueError:
    print(f"Could not parse {raw!r} as an integer.")