Python · Theory

isupper()

Theory

226/268

isupper()

isupper 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.

isupper() — output — True.

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

Exam tip

Call isupper on one real word and say what prints.

Example

# isupper()
print("ASHA".isupper())

isupper() — output: True.

Short notes

Defisupper works on str.
Ruleisupper usually returns a new string.
Trapisupper does not change the original string in place.

Python · Theory

isupper()

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Theory

226/268

isupper()

isupper 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.

isupper() — output — True.

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

Exam tip

Call isupper on one real word and say what prints.

Example

# isupper()
print("ASHA".isupper())

isupper() — output: True.

Short notes

Defisupper works on str.
Ruleisupper usually returns a new string.
Trapisupper does not change the original string in place.

isupper()

Example

Short notes

Questions

isupper()

Example

Short notes

Questions