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Python code. Instruction are given within the quotations for each function. 1) definvert_dict(d):   """ Given a dictionary d, create the invert of the dictionary where the key is a value v in d, and v is mapped to a set of keys in original d whose values are equal to v. Return the inverted dictionary mapping value to set of keys   """   2) defhistogram(words):   """ Given a list of words, create a histogram dictionary where the key is the length of a word and the value is the count of how many words in the list are of that length. Return the histogram dictionary mapping length to word counts   """

Python code. Instruction are given within the quotations for each function. 1) definvert_dict(d):   """ Given a dictionary d, create the invert of the dictionary where the key is a value v in d, and v is mapped to a set of keys in original d whose values are equal to v. Return the inverted dictionary mapping value to set of keys   """   2) defhistogram(words):   """ Given a list of words, create a histogram dictionary where the key is the length of a word and the value is the count of how many words in the list are of that length. Return the histogram dictionary mapping length to word counts   """

Database System Concepts
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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Python code. Instruction are given within the quotations for each function.
1) definvert_dict(d):
 
"""
Given a dictionary d, create the invert of the dictionary where
the key is a value v in d, and v is mapped to a set of keys in original
d whose values are equal to v.
Return the inverted dictionary mapping value to set of keys
 
"""
 
2) defhistogram(words):
 
"""
Given a list of words, create a histogram dictionary where the key
is the length of a word and the value is the count of how many
words in the list are of that length.
Return the histogram dictionary mapping length to word counts
 
"""
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