Chapter 9: Problem 7

Suppose a dictionary named inventory exists. What does the following statement do? del inventory[654]

Short Answer

Expert verified

Answer: The statement `del inventory[654]` deletes the key-value pair with the key '654' in the 'inventory' dictionary. If the key '654' exists, its key-value pair will be removed; if not, a KeyError will be raised.

Step by step solution

Understanding the 'inventory' dictionary

First, let's understand what a dictionary is in Python. A dictionary is a mutable, unordered data structure that stores data in the form of a key-value pair. Here, the dictionary's name is 'inventory'. It might contain key-value pairs like the id of an item and the corresponding information attached to that id.

Comprehending the 'del' statement

The 'del' statement in Python is used to delete an object. This object can be a variable, list element, dictionary item, or other data structures. In the provided exercise, it is a dictionary element with the key 654.

Interpreting the statement's impact on 'inventory'

The given statement 'del inventory[654]' is used to delete the key-value pair of the 'inventory' dictionary for which the key is '654'. If the key 654 exists in the dictionary, its key-value pair will be removed. If not, a KeyError will be raised.

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Suppose a dictionary named inventory exists. What does the following statement do? del inventory[654]

Short Answer

Step by step solution

Understanding the 'inventory' dictionary

Comprehending the 'del' statement

Interpreting the statement's impact on 'inventory'

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