Polymorphism through functions in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a function that prints the length of any input.

Python

def print_length([1]):
    print(len(item))

print_length("hello")

Drag options to blanks, or click blank then click option'

Avalue

Blength

Citem

Dobj

Attempts:

3 left

💡 Hint

Common Mistakes

Using a parameter name different from the variable inside the function causes a NameError.

The function parameter should be named item because the print statement uses item to get the length.

2fill in blank

medium

Complete the code to call the function with a list argument.

Python

def print_length(item):
    print(len(item))

print_length([1])

Drag options to blanks, or click blank then click option'

A[1, 2, 3]

B5

C"hello"

Dlen

Attempts:

3 left

💡 Hint

Common Mistakes

Passing an integer like 5 causes a TypeError because integers have no length.

The function expects an object with length. A list like [1, 2, 3] works well.

3fill in blank

hard

Fix the error in the function to handle any input and print its length.

Python

def print_length(item):
    print([1](item))

print_length(12345)

Drag options to blanks, or click blank then click option'

Acount

Blen

Csize

Dlength

Attempts:

3 left

💡 Hint

Common Mistakes

Using undefined functions like length or size causes NameError.

The built-in function len() returns the length of an object. Using len(item) is correct.

4fill in blank

hard

Fill both blanks to create a function that works with strings and lists, printing their lengths.

Python

def print_length([1]):
    print(len([2]))

print_length("test")
print_length([1, 2, 3])

Drag options to blanks, or click blank then click option'

Adata

Citem

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Using different names causes NameError.

The parameter and the variable inside len() must be the same. Here, both are data.

5fill in blank

hard

Fill all three blanks to create a function that prints the length of the uppercase version of a string argument.

Python

def print_upper_length([1]):
    upper_str = [2].upper()
    print(len([3]))

print_upper_length("hello")

Drag options to blanks, or click blank then click option'

Atext

Cupper_str

Dtext.upper()

Attempts:

3 left

💡 Hint

Common Mistakes

Using text.upper() directly in print causes error because it's not stored.

Mismatching variable names causes NameError.

The parameter is text. We call text.upper() and store it in upper_str. Then print length of upper_str.