Intro to Python for Computer Science and Data Science: Learning to Program with AI, Big Data and The Cloud

Exercises

1. 6.1 (Discussion: Dictionary Methods) Briefly explain the operation of each of the following dictionary methods:

   1. add

   2. keys

   3. values

   4. items

2. 6.2 (What’s Wrong with This Code?) The following code should display the unique words in the string text and the number of occurrences of each word.

   from collections import Counter
   text = ('to be or not to be that is the question')
   counter = Counter(text.split())
   for word, count in sorted(counter):
       print(f'{word:<12}{count}')
   

3. 6.3 (What Does This Code Do?) The dictionary temperatures contains three Fahrenheit temperature samples for each of four days. What does the for statement do?

   temperatures = {
       'Monday': [66, 70, 74],
       'Tuesday': [50, 56, 64],
       'Wednesday': [75, 80, 83],
       'Thursday': [67, 74 ...