len() function
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. What is
len("Hello")?2. What is
len("Hi")?3. What is
len("Hello World")?4. Do spaces count in
len()?5. After
name = "Alice", what is len(name)?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1len(Hello) | AOk: Returns 0 | |
| 2len('cat', 'dog') | BOutput: 3 | |
| 3n = len('Python') | CValid: n stores 6 | |
| 4len('') | DError: Missing quotes | |
| 5print(len('Hello')) | EOutput: 5 | |
| 6w = 'cat' print(len(w)) | FError: Too many arguments |
C
Definitions
len("Hello")
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
length = ___("Hello")
2.
name = "Alice"
result = len(____)
print(result)
3.
message = "Hi there"
size = ___(message)
4.
word = "Python"
length = len(word)
print(______)
5.
text = "Hello World"
count = len(____)
print(count)
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
name = "Alice"
B
length = len name
C
print(length)
Question 2
A
word = "Python"
B
size = len("word")
C
print(size)
Question 3
A
message = "Hello"
B
count = length(message)
C
print(count)
Question 4
A
text = "Hi there"
B
size = len(text)
C
print(size)
D
new_len = len(Hello)
E
print(new_len)
Question 5
A
name = "Bob"
B
name_length = len(name)
C
message = "Python Code"
D
msg_len = len message
E
print(msg_len)
Answer Key
len() function
Section A: Quick Questions
Q1
A — 5
Q2
A — 2
Q3
A — 11
Q4
B — Yes
Q5
B — 5
Section B: Match the Pairs
Q1
len(Hello) → Error: Missing quotes
Q2
len('cat', 'dog') → Error: Too many arguments
Q3
n = len('Python') → Valid: n stores 6
Q4
len('') → Ok: Returns 0
Q5
print(len('Hello')) → Output: 5
Q6
w = 'cat'
print(len(w)) → Output: 3
Section C: Definitions
Q1
len("Hello") — len() counts characters - len("Hello") gives 5.~~len("Hello World")Section D: Fill in the Blanks
Q1
length = len("Hello")Q2
name = "Alice"
result = len(name)
print(result)Q3
message = "Hi there"
size = len(message)Q4
word = "Python"
length = len(word)
print(length)Q5
text = "Hello World"
count = len(text)
print(count)Section E: Spot the Error
Q1
B — Line 2 is missing parentheses. Should be: length = len(name)
Q2
B — Line 2 puts the variable in quotes. Should be: len(word)
Q3
B — Line 2 uses the wrong function name. Should be: len(message)
Q4
D — Line 4 is missing quotes around Hello. Should be: len("Hello")
Q5
D — Line 4 is missing parentheses. Should be: msg_len = len(message)