6.7 Program: Data visualization (Python 3)

Anonymous
timer Asked: Oct 5th, 2018

Question description

(1) Prompt the user for a title for data. Output the title. (1 pt)


Ex:

Enter a title for the data: Number of Novels Authored
You entered: Number of Novels Authored


(2) Prompt the user for the headers of two columns of a table. Output the column headers. (1 pt)

Ex:

Enter the column 1 header: Author name
You entered: Author name

Enter the column 2 header: Number of novels
You entered: Number of novels


(3) Prompt the user for data points. Data points must be in this format: string, int. Store the information before the comma into a string variable and the information after the comma into an integer. The user will enter -1 when they have finished entering data points. Output the data points. Store the string components of the data points in a list of strings. Store the integer components of the data points in a list of integers. (4 pts)

Ex:

Enter a data point (-1 to stop input): Jane Austen, 6
Data string: Jane Austen
Data integer: 6


(4) Perform error checking for the data point entries. If any of the following errors occurs, output the appropriate error message and prompt again for a valid data point.

  • If entry has no comma
  • Output: Error: No comma in string. (1 pt)
  • If entry has more than one comma
  • Output: Error: Too many commas in input. (1 pt)
  • If entry after the comma is not an integer
  • Output: Error: Comma not followed by an integer. (2 pts)


Ex:

Enter a data point (-1 to stop input): Ernest Hemingway 9
Error: No comma in string.

Enter a data point (-1 to stop input): Ernest, Hemingway, 9
Error: Too many commas in input.

Enter a data point (-1 to stop input): Ernest Hemingway, nine
Error: Comma not followed by an integer.

Enter a valid data point: Ernest Hemingway, 9
Data string: Ernest Hemingway
Data integer: 9


(5) Output the information in a formatted table. The title is right justified with a minimum field width value of 33. Column 1 has a minimum field width value of 20. Column 2 has a minimum field width value of 23. (3 pts)

Ex:

        Number of Novels Authored
Author name         |       Number of novels
--------------------------------------------
Jane Austen         |                      6
Charles Dickens     |                     20
Ernest Hemingway    |                      9
Jack Kerouac        |                     22
F. Scott Fitzgerald |                      8
Mary Shelley        |                      7
Charlotte Bronte    |                      5
Mark Twain          |                     11
Agatha Christie     |                     73
Ian Flemming        |                     14
J.K. Rowling        |                     14
Stephen King        |                     54
Oscar Wilde         |                      1


(6) Output the information as a formatted histogram. Each name is right justified with a minimum field width value of 20. (4 pts)

Ex:

         Jane Austen ******
     Charles Dickens ********************
    Ernest Hemingway *********
        Jack Kerouac **********************
 F. Scott Fitzgerald ********
        Mary Shelley *******
    Charlotte Bronte *****
          Mark Twain ***********
     Agatha Christie *************************************************************************
        Ian Flemming **************
        J.K. Rowling **************
        Stephen King ******************************************************
         Oscar Wilde *

LAB

ACTIVITY

6.7.1: Program: Data visualization (Python 3)

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main.py

1

# Type your code here

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