In 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 -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 data point (-1 to stop input): 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 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 ************** Stephen King ****************************************************** Oscar Wilde *
Operations
In mathematics and computer science, an operation is an event that is carried out to satisfy a given task. Basic operations of a computer system are input, processing, output, storage, and control.
Basic Operators
An operator is a symbol that indicates an operation to be performed. We are familiar with operators in mathematics; operators used in computer programming are—in many ways—similar to mathematical operators.
Division Operator
We all learnt about division—and the division operator—in school. You probably know of both these symbols as representing division:
Modulus Operator
Modulus can be represented either as (mod or modulo) in computing operation. Modulus comes under arithmetic operations. Any number or variable which produces absolute value is modulus functionality. Magnitude of any function is totally changed by modulo operator as it changes even negative value to positive.
Operators
In the realm of programming, operators refer to the symbols that perform some function. They are tasked with instructing the compiler on the type of action that needs to be performed on the values passed as operands. Operators can be used in mathematical formulas and equations. In programming languages like Python, C, and Java, a variety of operators are defined.
In 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 -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 data point (-1 to stop input): 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 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 **************
Stephen King ******************************************************
Oscar Wilde *
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