Write the code in PYTHON 3. keep the code simple. WorldSeriesWinners.txt Boston

Question

Write the code in PYTHON 3.

keep the code simple.

WorldSeriesWinners.txt

Boston Americans
New York Giants
Chicago White Sox
Chicago Cubs
Chicago Cubs
Pittsburgh Pirates
Philadelphia Athletics
Philadelphia Athletics
Boston Red Sox
Philadelphia Athletics
Boston Braves
Boston Red Sox
Boston Red Sox
Chicago White Sox
Boston Red Sox
Cincinnati Reds
Cleveland Indians
New York Giants
New York Giants
New York Yankees
Washington Senators
Pittsburgh Pirates
St. Louis Cardinals
New York Yankees
New York Yankees
Philadelphia Athletics
Philadelphia Athletics
St. Louis Cardinals
New York Yankees
New York Giants
St. Louis Cardinals
Detroit Tigers
New York Yankees
New York Yankees
New York Yankees
New York Yankees
Cincinnati Reds
New York Yankees
St. Louis Cardinals
New York Yankees
St. Louis Cardinals
Detroit Tigers
St. Louis Cardinals
New York Yankees
Cleveland Indians
New York Yankees
New York Yankees
New York Yankees
New York Yankees
New York Yankees
New York Giants
Brooklyn Dodgers
New York Yankees
Milwaukee Braves
New York Yankees
Los Angeles Dodgers
Pittsburgh Pirates
New York Yankees
New York Yankees
Los Angeles Dodgers
St. Louis Cardinals
Los Angeles Dodgers
Baltimore Orioles
St. Louis Cardinals
Detroit Tigers
New York Mets
Baltimore Orioles
Pittsburgh Pirates
Oakland Athletics
Oakland Athletics
Oakland Athletics
Cincinnati Reds
Cincinnati Reds
New York Yankees
New York Yankees
Pittsburgh Pirates
Philadelphia Phillies
Los Angeles Dodgers
St. Louis Cardinals
Baltimore Orioles
Detroit Tigers
Kansas City Royals
New York Mets
Minnesota Twins
Los Angeles Dodgers
Oakland Athletics
Cincinnati Reds
Minnesota Twins
Toronto Blue Jays
Toronto Blue Jays
Atlanta Braves
New York Yankees
Florida Marlins
New York Yankees
New York Yankees
New York Yankees
Arizona Diamondbacks
Anaheim Angels
Florida Marlins
Boston Red Sox
Chicago White Sox
St. Louis Cardinals
Boston Red Sox
Philadelphia Phillies

Part 1: World Series Winners [40 points] The file WorldSeries Winners.txt contains a chronological list of the World Series winning teams from 1903 through 2009. (The first line in the file is the name of the team that won in 1903, and the last line is the name of the team that won in 2009. Note that the World Series was not played in 1904 or 1994.) Write a program that reads the contents of the WorldSeriesWinners.txt file into a list. When the user enters the name of a team, the program displays the number of times that team has won the World Series in the time period from 1903 through 2009. 1. You must create and use at least 2 meaningful functions (your choice). 2. Prompt for the input file. Your program must check if the file exists. If it does not, your program should output a "file not found" message and keep asking until a correct file is entered. 3. Name the source code file “Teams-P Sample run: Here is a sample run of the program: Enter the name of a team: New York Yankees The New York Yankees won the world series 26 times between 1903 and 2009

Explanation / Answer

Calculators work best when a human provides equations for the computer to solve. We’ll start writing our program at the point where the human enters the numbers that they would like the computer to work with.

To do this, we’ll use Python’s built-in input() function that accepts user-generated input from the keyboard. Inside of the parentheses of the input() function we can pass a string to prompt the user. We’ll assign the user’s input to a variable.

For this program, we would like the user to input two numbers, so let’s have the program prompt for two numbers. When asking for input, we should include a space at the end of our string so that there is a space between the user’s input and the prompting string.

After writing our two lines, we should save the program before we run it. We can call this program calculator.py and in a terminal window, we can run the program in our programming environment by using the command python calculator.py. You should be able to type into the terminal window in response to each prompt.

Output

Enter your first number: 5 Enter your second number: 7

If you run this program a few times and vary your input, you’ll notice that you can enter whatever you want when prompted, including words, symbols, whitespace, or just the enter key. This is because input()takes data in as strings and doesn’t know that we are looking for a number.

We would like to use a number in this program for 2 reasons: 1) to enable the program to perform mathematical calculations, and 2) to validate that the user’s input is a numerical string.

Depending on our needs of the calculator, we may want to convert the string that comes in from the input() function to either an integer or a float. For us, whole numbers suit our purpose, so we’ll wrap the input() function in the int() function to convert the input to the integer data type.

calculator.py

Now, if we input two integers we won’t run into an error:

Output

Enter your first number: 23 Enter your second number: 674

But, if we enter letters, symbols, or any other non-integers, we’ll encounter the following error:

Output

Enter your first number: sammy Traceback (most recent call last): File "testing.py", line 1, in <module> number_1 = int(input('Enter your first number: ')) ValueError: invalid literal for int() with base 10: 'sammy'

So far, we have set up two variables to store user input in the form of integer data types. You can also experiment with converting the input to floats.

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