Answered: 1. Write a function invert_dict to…

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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1. Write a function invert_dict to reverse a dictionary, for example:
>>> eng2sp = {'one': 'uno', 'two': 'dos', 'three': 'tres'}
>>> sp2eng = invert_dict(eng2sp)
>>> sp2eng
{'uno':'one', 'dos':'two', 'tres':'three'}

2. Write a function print_dict to print all the key-values in a dictionary, for example:
>>> d2
{'a': 'one', 'b': 'two', 'c': 'Three'}
>>> print_dict(d2)
a:one
b:two
c:Three

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