Question

The _________ function returns the number of elements in a dictionary:

len()
count()
elements()
size()

Answer 1

In Python, the 'len()' function is used to determine the number of elements in a dictionary, which is the count of key-value pairs in it.

Step-by-step explanation:

In Python, the 'len()' function is used to determine the length or the number of elements in various data structures, including dictionaries. To calculate the number of elements in a dictionary, you simply apply the len() function to the dictionary. For example, if you have a dictionary named 'my_dict', you would use 'len(my_dict)' to get the count of elements.

Contrary to 'len()', the other options' (count()', 'elements()', and 'size())' are not standard functions for finding the length of a dictionary in Python. Using them for this purpose would result in errors. Therefore, the correct and widely accepted choice is len().

To obtain the number of elements in a dictionary in Python, the appropriate function is 'len()'. This function plays a fundamental role in determining the size or length of various data structures in the Python programming language.