ljust(width[,fillchar]) — Python Technical Interview Questions & Answers

ljust(width[,fillchar])

ljust(width[,fillchar])

  • ljust is a string helper. You call it on text like "Asha" or "banana". It gives a new string (or a number/True-False). The old string does not change unless you assign the result back.
  • ljust(width[,fillchar]) — output: Asha----.
  • Fresher trap: writing s.ljust() and expecting s to update. Strings are immutable. Write s = s.ljust(...) if you need the new value (when it returns a string).

Technical Interview Tip: Call ljust on one real word and say what prints.

Code Examples for ljust(width[,fillchar])

Example

# ljust(width[,fillchar])
print("Asha".ljust(8, "-"))

ljust(width[,fillchar]) — output: Asha----.

How to Explain ljust(width[,fillchar]) to an Interviewer

Explain ljust(width[,fillchar]) as if you are teaching a junior — definition, then one tiny script.

ljust works on str. ljust usually returns a new string.

What does the example print, and why?

ljust(width[,fillchar]) — output: Asha----

What mistake do freshers make with ljust(width[,fillchar])?

ljust does not change the original string in place.