16.16 Ch 7 Program: Data visualization (Python 3)

(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 -1when 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 *