Population data Program plan: • Declare a function named “main()”. Inside the function, ○ Use the “try…except” block to read the population from the file. ○ Create a file object “fileObj” for the file “USPopulation.txt” ○ Now, read the populations from the file and store it in “populationList” and close the file. ○ Use a “for” loop to convert the populations into “float” type. ○ Create an empty list “populationChange” to hold the changes in the population. ○ Now, use the “for” loop to find the population change for the successive years and store it in “populationChange”. ○ Call the function “max()” to find the greatest population change. ○ Call the function “index()” to find the position of the greatest population change. ○ Call the function “min()” to find the lowest population change. ○ Call the function “index()” to find the position of the lowest population change. ○ Then, call the function “sum()” to find the sum of the population changes in the “populationChange”. ○ Find the average annual change. ○ Now, print the average annual change, greatest population change year, and lowest population change year using the “print()” function. ○ Handle the exceptions if any occurred using the “except” blocks. • In the last, call the function “main()” to execute the program.

Question

If you have downloaded the source code from this book’s companion Web site, you will find a file named USPopulation.txt in the Chapter 07 folder. The file contains the midyear population of the United States, in thousands, during the years 1950 through 1990. The first line in the file contains the population for 1950, the second line contains the population for 1951, and so forth.Write a program that reads the file’s contents into a list. The program should display the following data:• The average annual change in population during the time period• The year with the greatest increase in population during the time period• The year with the smallest increase in population during the time period(You can access the book’s companion Web site at www.pearsonglobaleditions.com/gaddis.)

Answer 1

Question

Chapter 7, Problem 9PE

Program Plan Intro

Population data

Program plan:

• Declare a function named “main()”. Inside the function,

○ Use the “try…except” block to read the population from the file.

○ Create a file object “fileObj” for the file “USPopulation.txt”

○ Now, read the populations from the file and store it in “populationList” and close the file.

○ Use a “for” loop to convert the populations into “float” type.

○ Create an empty list “populationChange” to hold the changes in the population.

○ Now, use the “for” loop to find the population change for the successive years and store it in “populationChange”.

○ Call the function “max()” to find the greatest population change.

○ Call the function “index()” to find the position of the greatest population change.

○ Call the function “min()” to find the lowest population change.

○ Call the function “index()” to find the position of the lowest population change.

○ Then, call the function “sum()” to find the sum of the population changes in the “populationChange”.

○ Find the average annual change.

○ Now, print the average annual change, greatest population change year, and lowest population change year using the “print()” function.

○ Handle the exceptions if any occurred using the “except” blocks.

• In the last, call the function “main()” to execute the program.

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If you have downloaded the source code from this book’s companion Web site, you will find a file named USPopulation.txt in the Chapter 07 folder. The file contains the midyear population of the United States, in thousands, during the years 1950 through 1990. The first line in the file contains the population for 1950, the second line contains the population for 1951, and so forth.Write a program that reads the file’s contents into a list. The program should display the following data:• The average annual change in population during the time period• The year with the greatest increase in population during the time period• The year with the smallest increase in population during the time period(You can access the book’s companion Web site at www.pearsonglobaleditions.com/gaddis.)

The attached file USPopulation,txt contains the US population in thousands, during the years 1950 through 1990. The first line in the file contains the population for 1950, the second line contains the population for 1951, and so forth. Write a program that reads the file's contents into a list. The program should display the following data: the average annual growth in population during the time period the year with the greatest increase in population during the time period (highest growth rate) the year with the smallest increase in population during the time period (smallest growth rate) 151868 153982 156393 158956 161884 165069 168088 171187 174149 177135 179979 182992 185771 188483 191141 193526 195576 197457 199399 201385 203984 206827 209284 211357 213342 215465 217563 219760 222095 224567 227225 229466 231664 233792 235825 237924 240133 242289 244499 246819 249623

Laboratory Exercise No. 40 Filename: Lab_exer40 You are tasked to create a program that will get the basic salary of 5 employees from the user and these 5 values should be saved in a list named as basicSalary. The user will then enter the incentive rate (Example. 0.15) The program should compute the net salary. The net salary is computed using the formula basic salary multiplied by incentive rate. Store the computed net salary in another list which will be named as net_salary. Display the values stored in the 2 lists. Example Output: Enter basic salary : 200 Enter basic salary : 300 Enter basic salary : 450 Enter basic salary : 600 Enter basic salary : 750 Enter incentive rate : 0.50 Basic salary [200,300,450,600,750] Net Salary [100,150,225,300,375]