Python Exercises 31

Introduction

This assignment lets you practice manipulating strings, including slices, justification, and other string methods. You'll revisit this program again in the next unit.

Preparation

Review the string functions in section 9.5 of the text. You'll also find the function isdigit() useful, which is documented at Python.org: String Methods

Download the starter program, Courses.py, compile and run. This gives you the list of data to use to test your program.

Directions

Your assignment is to take a list of strings representing (Department code, course number, title, enrollment) and print them in nice tables, one per line. Data looks like

'CS152Introduction to Python Programming21'

or

'CS352Data Structures19'

The department code and course number are always the same size, but the course titles contain different numbers of words and are different lengths. The enrollment numbers will always be between 1 and 999. Unfortunately, when the data was generated, the programmer forgot to add a space between each of the components, so you will have to deal with that in your program.

Look at the string methods in section 9.5 for how to do this. You may want to look on the web for some additional examples. You do not have to use the .format() method in order to accomplish this lab, nor do you need any techniques from Chapter 10.

For Table 1, print just the department code and course number, separated by a space

Table 1

CS 152
CS 369
...
MG 315

For Table 2, print all the data in the string, with a single space between each piece.

Table 2

CS 152 Introduction to Python Programming 21
CS 369 Operating Systems Administration 8
CS 352 Data Structures 19
CS 208 Discrete Mathematics 124
CS 319 Computer Architecture 14
MA 221 Calculus and Analytical Geometry for Majors I 12
MA 311 Linear Algebra 7
MA 150 Precalculus Mathematics 27
CS 335 Introduction to Cybersecurity 20
IS 361 Data Management Systems 22
MG 315 Advanced Business Statistics 6

For Table3, truncate the titles to the number of characters shown, but watch out for short titles. Make sure the enrollments all line up as shown. Add up all the enrollments and print the total.

Table 3

CS 152 Introduction to Pyth 21
CS 369 Operating Systems Ad 8
CS 352 Data Structures 19
CS 208 Discrete Mathematics 124
CS 319 Computer Architectur 14
MA 221 Calculus and Analyti 12
MA 311 Linear Algebra 7
MA 150 Precalculus Mathemat 27
CS 335 Introduction to Cybe 20 IS 361 Data Management Syst 22
MG 315 Advanced Business St 6
Total: 280

For Table 4, sort the list (this is one statement in Python), and print the complete title, but make sure all the enrollments line up as shown.

Table 4

CS152 Introduction to Python Programming 21
CS208 Discrete Mathematics 124
CS319 Computer Architecture 14
CS335 Introduction to Cybersecurity 20
CS352 Data Structures 19
CS369 Operating Systems Administration 8
IS361 Data Management Systems 22
MA150 Precalculus Mathematics 27
MA221 Calculus and Analytical Geometry for Majors I 12
MA311 Linear Algebra 7
MG315 Advanced Business Statistics 6

For Table 4, make sure your program actually prints the table based on the length of the longest title. You will have to write code to find the length of the longest title, then use that number. For instance, if the data only had CS 208 and MA 311, the table would look like

CS 208 Discrete Mathematics 24
MA 311 Linear Algebra 7

Once your program works with the provided data,

a) add a record to the list to demonstrate your code still computes a total correctly,

b) add a second record to the list to demonstrate your code still sorts the list correctly,

c) add a third record to the list to show that your program always creates a neat table, no matter how long or short the titles are.

Notes

The tables increase in complexity, so work on them in order.

Be sure to document your program with an appropriate header comment, including your name, date, and description of what the program does. Also add comments before blocks of code, rather than at the end of a line.

Some students think the way to solve this problem is to retype the original data to fix the spacing problems. Don't try that approach - you won't receive any credit if you do that.

Starter Code

# Given a list strings containing
# department code, course number, course title, enrollment
# Print a series of tables in different formats
# Unfortunately, the spacing between each of these items was lost when
# each string was generated. You will have to deal with this in your program.
#

def main():
courses = ['CS152Introduction to Python Programming21',
'CS369Operating Systems Administration8',
'CS352Data Structures19',
'CS208Discrete Mathematics124',
'CS319Computer Architecture14',
'MA221Calculus and Analytical Geometry for Majors I12',
'MA311Linear Algebra7',
'MA150Precalculus Mathematics27',
'CS335Introduction to Cybersecurity20',
'IS361Data Management Systems22',
'MG315Advanced Business Statistics6' ]


# Print the table without formatting
for aCourse in courses:
print(aCourse)

main()