Question

Only use the code in Objectives and write the code in Python

Question 1. Study the examples below carefully and write a program for journal subscription Your program should work exactly as the following examples The text in bold indicates user input. Example 1: The user is a student, and the user subscribes to 2 journals Question 1 - Journal of Commodity Markets Journal of Sustainable Mining Journal of Asia-Pacific Biodiversity Student $21 $22 $27 Non-student $50 $60 $75 Are you a student? (Y/N): Y Subscribe to Journal of Commodity Markets? (Y/N): Y Subscribe to Journal of Sustainable Mining? (Y/N): N Subscribe to Journal of Asia-Pacific Biodiversity? (Y/N):Y Your selection: - Journal of Commodity Markets - Journal of Asia-Pacific Biodiversity Total cost $48 Example 2: The user is not a student, and the user subscribes to 1 journal Question 1: - Journal of Commodity Markets Journal of Sustainable Mining Journal of Asia-Pacific Biodiversity Student $21 $22 $27 Non-student $50 $60 $75 Are you a student? (Y/N):N Subscribe to Journal of Commodity Markets? (Y/N):N Subscribe to Journal of Sustainable Mining? (Y/N) N Subscribe to Journal of Asia-Pacific Biodiversity? (Y/N): Y Your selection: - Journal of Asia-Pacific Biodiversity Total cost $75 Example 3: The user is a student, and the user subscribes to no journals -Question 1: - Journal of Commodity Markets Journal of Sustainable Mining Journal of Asia-Pacific Biodiversity Student $21 $22 $27 Non-student $50 $60 $75 Are you a student? (Y/N): Y Subscribe to Journal of Commodity Markets? (Y/N): N Subscribe to Journal of Sustainable Mining? (Y/N): N Subscribe to Journal of Asia-Pacific Biodiversity? (Y/N):N Your selection: -None Total cost $0 Important requirements: . On the top, the program must use string format to display the journal price. The 1st column must have left alignment with 40 spaces; the 2nd and 3rd columns must have right alignment with 15 spaces. . The program must display all the journals that the user has selected. When the user selects no journals then the program must display "None" as in the Example 3 above The total cost must be calculated correctly depending on the user is a student or non-student. For user input, we assume that the user always enter Y or N, and your program does not have to handle invalid input. Question 2. A. Write a program using for loop to display the following exact output Question 2A: - 1 B. Write a program using while loop to display the following exact output -Question 2B: -- Question 3. Study the examples below carefully and write a program to ask the user to enter the length of the square and then display the square. Your program must use for loop statement. Your program should work exactly as the following examples. The text in bold indicates user input. Example 1: The user chooses the square length to be l -Question 3: - Enter the length of square: 1 Here is a square of length 1 Example 2: The user chooses the square length to be 2 --Question 3: -- Enter the length of square: 2 Here is a square of length 2 Example 3: The user chooses the square length to be 3 -Question 3: -- Enter the length of square: 3 Here is a square of length 3 Example 4: The user chooses the square length to be 4 -Question 3: - Enter the length of square: 4 Here is a square of length 4 Example 5: The user chooses the square length to be 5 -Question 3: - Enter the length of square: 5 Here is a square of length 5 ㄊㄊㄊㄊㄊ

Answer 1

python code for question1

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import pandas as pd   
data = [['Journal of Commodity Markets', '$21', '$50'],['Journal of Sustainable Mining', '$22', '$60'],['Journal of Asia-Pacific Biodiversity', '$27', '$75']] # data for table
df = pd.DataFrame(data) # converting data into dataframe
df.columns = ['Journals', 'Student', 'Non-student'] # inserting columns name into dataframe

print(df)

option1 = input("Are you a student?")
option2 = input("subscribe to Journal of Commodity Markets? (Y/N): ")
option3 = input("subscribe to Journal of Sustainable Mining? (Y/N): ")
option4 = input("subscribe to Journal of Asia-Pacific Biodiversity? (Y/N): ")

print("Your selection:")
if option2 == 'Y':
print(" - Journal of Commodity Markets")
if option3 == 'Y':
print(" - Journal of Sustainable Mining")
if option4 == 'Y':
print(" - Journal of Asia-Pacific Biodiversity")
if option2 == 'N' and option3 == 'N' and option4 == 'N':
print(" - None")
  
cost = 0 # cost variable is initialized to 0 and is updated furthur according to journals choosen
if option1 == 'Y':
if option2 == 'Y':
cost += 21
if option3 == 'Y':
cost += 22
if option4 == 'Y':
cost += 27
else:
if option2 == 'Y':
cost += 50
if option3 == 'Y':
cost += 60
if option4 == 'Y':
cost += 75
print("Total Cost $",cost)

#############################################

output:

                               Journals Student Non-student
0          Journal of Commodity Markets     $21         $50
1         Journal of Sustainable Mining     $22         $60
2  Journal of Asia-Pacific Biodiversity     $27         $75

Are you a student?Y
subscribe to Journal of Commodity Markets? (Y/N): Y
subscribe to Journal of Sustainable Mining? (Y/N): N
subscribe to Journal of Asia-Pacific Biodiversity? (Y/N): Y
Your selection:
 - Journal of Commodity Markets
 - Journal of Asia-Pacific Biodiversity
Total Cost $ 48

Are you a student?N
subscribe to Journal of Commodity Markets? (Y/N): N
subscribe to Journal of Sustainable Mining? (Y/N): N
subscribe to Journal of Asia-Pacific Biodiversity? (Y/N): Y
Your selection:
 - Journal of Asia-Pacific Biodiversity
Total Cost $ 75

Are you a student?Y
subscribe to Journal of Commodity Markets? (Y/N): N
subscribe to Journal of Sustainable Mining? (Y/N): N
subscribe to Journal of Asia-Pacific Biodiversity? (Y/N): N
Your selection:
 - None
Total Cost $ 0