Introduction to Lists

 

Introduction

The purpose of this in-class activity is to practice creating and working with lists and to iterate through lists.

Exercises

  1. Read through the following sections from the Runestone book, working through the exercises in the readings:
    • Section 7.5: Lists and for loops.
    • Section 7.6: The Accumulator Pattern.
    • Section 7.7: Transversal and the for loop: By Index.

  2. Create a new notebook in Google Colab to contain your code for the following exercises. Each exercise should be in a new Code cell.
    1. Create a list containing the names of at least 10 of your family members. (You could include your parents, sibblings, grandparents, aunts, uncles, cousins, etc.) Then write statements for the following:
      • Use an appropriate index to print the first element of your list.
      • Use an appropriate index to print the last element of your list.
      • Use list traversal to print out all elements of your list.
      • Use a for loop and indexing to print out all elements of your list.

    2. Create a list of the integers from 0 to 100 and assign that list to the variable numbers. Use a Python function to create the list - do not type out the whole list yourself! Then write statements for the following:
      • Print out the middle element of your list. You should use the len function in your index.
      • Use a for loop to sum the elements of your list. Then print out that sum.

    3. Create a list of at least 10 high temperature readings recorded at the Kalamazoo/Battle Creek International Airport Station in the month of September. Weather History. Then write statements for the following:
      • Use a for loop and an if statement to find the total number of temperatures in your list that were over 80 degrees. (Or over 70 degrees, or some other threshhold you determine makes sense.) Print out that total.
      • Write statements to calculate the average temperature from your list. (How do you calculate the average? Sum up the values, and then divide by the number of value.) Print the average temperature.

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