raw input - Limiting raw_input in python -

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how can limit amount of characters user able type raw_input? there easy solution problem, can't figure out.

a simple solution adding significant message , using slicing first 40 characters:

some_var = raw_input("input (no longer 40 characters): ")[:40]

another check if input length valid or not:

some_var = raw_input("input (no longer 40 characters): ")  if len(some_var) < 40:     # ...

which should choose? depends in implementation, if want accept input "truncate" it, use first approach. if want validate first (if input has correct length) use second approach.


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