String Methods (upper, lower, replace…)
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. What does 'hello'.upper() return?
2. What does 'HELLO'.lower() return?
3. What does 'abc'.replace('b', 'x') return?
4. Do string methods change the original string?
5. What does ' hi '.strip() return?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1name = 'hello' name.Upper() | AError: replace() needs 2 arguments | |
| 2'hello'.replace('l') | BOk: Returns ['a','b','c'] | |
| 3' hi '.strip() | CError: Method names are lowercase | |
| 4'a,b,c'.split(',') | DValid: Returns 'hi' | |
| 5print('hello'.upper()) | EOutput: Hi | |
| 6print('hi'.replace('h','H')) | FOutput: HELLO |
C
Definitions
.upper()
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
name = 'hello'
print(name._____())
2.
name = 'HELLO'
print(name._____())
3.
msg = 'I like cats'
print(msg._______('cats', 'dogs'))
4.
text = ' hi '
print(text._____())
5.
csv = 'a,b,c'
print(csv._____(','))
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
name = 'hello'
B
name.upper()
C
print(name)
D
print('Done')
Question 2
A
name = 'hello'
B
result = name.Upper()
C
print('Result:', result)
D
print('Done')
Question 3
A
name = 'hello'
B
result = upper(name)
C
print('Result:', result)
D
print('Done')
Question 4
A
msg = 'hello'
B
result = msg.replace('l')
C
print('Result:', result)
D
print('Done')
Question 5
A
data = ' hi '
B
cleaned = data.strip
C
print('Cleaned:', cleaned)
D
print('Done')
Answer Key
String Methods (upper, lower, replace…)
Section A: Quick Questions
Q1
A — 'HELLO'
Q2
B — 'hello'
Q3
A — 'axc'
Q4
A — No they return a new string
Q5
B — 'hi'
Section B: Match the Pairs
Q1
name = 'hello'
name.Upper() → Error: Method names are lowercase
Q2
'hello'.replace('l') → Error: replace() needs 2 arguments
Q3
' hi '.strip() → Valid: Returns 'hi'
Q4
'a,b,c'.split(',') → Ok: Returns ['a','b','c']
Q5
print('hello'.upper()) → Output: HELLO
Q6
print('hi'.replace('h','H')) → Output: Hi
Section C: Definitions
Q1
.upper() — Returns the string in all uppercase letters.~~.lower()Section D: Fill in the Blanks
Q1
name = 'hello'
print(name.upper())Q2
name = 'HELLO'
print(name.lower())Q3
msg = 'I like cats'
print(msg.replace('cats', 'dogs'))Q4
text = ' hi '
print(text.strip())Q5
csv = 'a,b,c'
print(csv.split(','))Section E: Spot the Error
Q1
B — upper() returns a new string: must assign it back or print directly
Q2
B — Method names are lowercase: upper(), not Upper()
Q3
B — upper() is a string method: use name.upper(), not upper(name)
Q4
B — replace() needs two arguments: old and new
Q5
B — Missing parentheses: strip is a method, call it with strip()