Question

In the context of a for loop printing a dictionary in Python (6.5.3), what is the primary purpose of using a for loop?

A) Iterate over dictionary keys
B) Modify dictionary values
C) Add new items to the dictionary
D) Sort the dictionary alphabetically

Answer 1

A for loop's primary purpose with a dictionary is to iterate over its keys. It provides the mechanism to access each key in order to perform actions such as printing them out, but does not inherently modify, add, or sort the dictionary elements.

Step-by-step explanation:

The primary purpose of using a for loop when printing a dictionary in Python is to iterate over dictionary keys. A for loop allows you to execute a block of code once for each key in the dictionary. This process does not modify the values, add new items, or sort the dictionary by itself – it simply provides a means to access and print out each key (and potentially the corresponding value if desired).

For example, if you have a dictionary my_dict = {'a': 1, 'b': 2, 'c': 3}, you can use a for loop like this:

for key in my_dict:
print(key, my_dict[key])

This loop will print each key followed by its associated value:

a 1
b 2
c 3