Case conversion

301.11 String Manipulation

String Manipulation — Note 3 of 4

UPPER lower Title.

What you need to know

String methods .upper(), .lower(), and .title() return new strings with changed case. The original string is not modified. Useful for case-insensitive comparisons.

What to know

.upper() converts to UPPERCASE
.lower() converts to lowercase
.title() capitalises first letter of each word
Original string is unchanged — methods return a new string
Use .lower() for case-insensitive comparison

Code examples

Case conversion

python

name = "alice smith"
print(name.upper())   # ALICE SMITH
print(name.title())   # Alice Smith

answer = input("Yes/No: ")
if answer.lower() == "yes":
    print("Confirmed")

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Specification notes for programming are in Paper 2.

Case conversion

301.11 String Manipulation

Practise exam questions

String Manipulation — Note 3 of 4

UPPER lower Title.

What you need to know

String methods .upper(), .lower(), and .title() return new strings with changed case. The original string is not modified. Useful for case-insensitive comparisons.

What to know

.upper() converts to UPPERCASE
.lower() converts to lowercase
.title() capitalises first letter of each word
Original string is unchanged — methods return a new string
Use .lower() for case-insensitive comparison

Code examples

Case conversion

python

name = "alice smith"
print(name.upper())   # ALICE SMITH
print(name.title())   # Alice Smith

answer = input("Yes/No: ")
if answer.lower() == "yes":
    print("Confirmed")

← Previous noteSubstring slicing301.11 String Manipulation Next note →String validation301.11 String Manipulation

Back to String Manipulation

Specification notes for programming are in Paper 2.