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Python · Theory

isspace()

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Theory

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isspace()

isspace 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.

isspace() — output — True.

Fresher trap: writing s.isspace() and expecting s to update. Strings are immutable. Write s = s.isspace(...) if you need the new value (when it returns a string).

Exam tip

Call isspace on one real word and say what prints.

Example

# isspace()
print("   ".isspace())

isspace() — output: True.

Short notes

  • Defisspace works on str.
  • Ruleisspace usually returns a new string.
  • Trapisspace does not change the original string in place.

Questions

1

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

2

What does the example print, and why?

3

What mistake do freshers make with isspace()?

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