You have been asked to write a function that supplies the "reverse lookup" name for the person associated with a phone number. This mean phone number, you get the name of the person who is registered with that phone number. For this problem, you have been asked to write a dictionary 1 def reverse_lookup_dictionary(phone_num: str, phone_to_name: dict[str, str]) -> str: **"This function receives a phone number phone_num, and a dictionary phone_to_name in which each key is a phone number and each value is the name associated with that phone number. 4 6 Return the name associated with phone_num in phone_to_name, or ctning if thono ir no match

You have been asked to write a function that supplies the "reverse lookup" name for the person associated with a phone number. This mean phone number, you get the name of the person who is registered with that phone number. For this problem, you have been asked to write a dictionary 1 def reverse_lookup_dictionary(phone_num: str, phone_to_name: dict[str, str]) -> str: **"This function receives a phone number phone_num, and a dictionary phone_to_name in which each key is a phone number and each value is the name associated with that phone number. 4 6 Return the name associated with phone_num in phone_to_name, or ctning if thono ir no match

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

You have been asked to write a function that supplies the "reverse lookup" name for the person associated with a phone number. This means that given a
phone number, you get the name of the person who is registered with that phone number. For this problem, you have been asked to write a solution using a
dictionary
1 def reverse_lookup_dictionary (phone_num: str,
phone_to_name: dict[str, str]) -> str:
"""This function receives a phone number phone_num, and a dictionary
4
phone_to_name in which each key is a phone number and each value
is the name associated with that phone number.
7
Return the name associated with phone_num in phone_to_name, or
an empty string if there is no match.
10
>>> reverse_lookup_dictionary("416-555-3498", {"416-555-3498": \
11
"John A. Macdonald", "647-555-9812": "Louis Riel", "416-555-6543": \
12
"Canoe Head", "905-555-6681":"Tim Horton"})
13
'John A. Macdonald'
14

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