*The following needs to be in pythonFor this application, you will need to create a Python application that reads the sales for 12 months from a file and calculates the total yearly sales as well as the average monthly sales. In addition, this program should let the user edit the sales for any month.Jan14317Feb3903Mar1073Apr3463May2429Jun4324Jul9762Aug15578Sep2437Oct6735Nov88Dec2497Step 1Define a display_title() function and have ituse the print() to show the text: [FirstName] [LastName]'s Monthly SalesReplace the placeholders with your own first and last nameadd a space using the print()Define a display_menu() function and have itUse the print() function several times to show the following text with a space after:COMMAND MENUmonthly - View monthly salesyearly - View yearly summaryedit - Edit sales for a monthexit - Exit program Step 2Define a main() functionCall the display_title() function and the display_menu() function created in step 1.Test the program to see if the functions work as expected. You should see the title and the command menuCreate a new variable named sales and assign it the value of read_sales() function. Define a new read_sales() functionAssign sales to an empty arraysales = []Open the csv file, read the file, and close the file.with open(FILENAME, newline="") as file: reader = csv.reader(file) for row in reader: sales.append(row)return salesStep 3Back in the main methodCreate a while loop that executes until the user types exit.Inside the loop, store the user's input in a variable called "command"Next, create an if, elif, elif,... for each of the command menu items while True: command = input("Command: ") if command == "monthly": view_monthly_sales(sales) elif command == "yearly": view_yearly_summary(sales) elif command == "edit": edit(sales) elif command == "exit": break else: print("Not a valid command. Please try again.
") print("Bye!")HINT: Notice the functions are not yet created. We will do this in the next few steps.Add the following at the bottom of your code:if __name__ == "__main__": main() Step 4Create a view_monthly_sales(sales) function that receives the sales as a parameter.In the view_monthly_sales(sales) function, create a for loop that loops through all items.for row in sales: print(f"{row[0]} - {row[1]}")Add a space after using the print() functionStep 5Create a view_yearly_summary(sales) function that receives the sales as a parameterCreate a total variable and set it equal to 0.Create a for loop that loops through each row in the sales.Create an amount variable and assign it to the integer value in row 2 (row[1]).Add to the total the amount received in that row (total += amount)Get the count and store it in a variable named "count" (count = len(sales)).Create an average variable and assign it to the total / count (average = total / count)Round the average to two decimal places.Display the yearly total and the monthly averageAdd a space below the results.for row in sales: amount = int(row[1]) total += amount # get count count = len(sales) # calculate average average = total / count average = round(average, 2) # format and display the result print("Yearly total: ", total) print("Monthly average: ", average) print()Step 6Create an edit(sales) function that receives the sales as a parameterCreate a new variable named "names" in the new edit function.Assign it a list of abbreviated months (names = ['Jan', 'Feb, 'Mar', ... ])Create another variable named "name" and assign it the user's input for the month.Make sure it is not case sensitive (name = name.title())If the input DOES NOT exist in the names list, display "Invalid three-letter month."If it does exist, move to step 6.Step 7Create a variable named "index" and assign it the value of index of the month entered (index = names.index(name))Create a variable in the if statement named "amount" and assign it the value of an integer from the user's input (amount = int(input("Sales Amount: "))Create a "month" variable and assign it an empty list (month = [])Append the name to the list as well as the amountmonth.append(name) month.append(str(amount))Add the month and amount to the sales list at the correct index (sales[index] = month)Call the method write_sales(sales) that we will create in step 7.Show the text "Sales amount for {month[0]} was modified."Add a space using the print() function.Step 8Create the write_sales(sales) function and have sales as a parameter.Similar to the read() function, we will need to open, write, and close the filewith open(FILENAME, "w", newline="") as file: writer = csv.writer(file) writer.writerows(sales)Step 9Test the application thoroughly to ensure there are no syntax or logical errors.Add a line of pseudo-code for EACH line of source code you created.Save the file.

Question

*The following needs to be in pythonFor this application, you will need to create a Python application that reads the sales for 12 months from a file and calculates the total yearly sales as well as the average monthly sales. In addition, this program should let the user edit the sales for any month.Jan14317Feb3903Mar1073Apr3463May2429Jun4324Jul9762Aug15578Sep2437Oct6735Nov88Dec2497Step 1Define a display_title() function and have ituse the print() to show the text: [FirstName] [LastName]'s Monthly SalesReplace the placeholders with your own first and last nameadd a space using the print()Define a display_menu() function and have itUse the print() function several times to show the following text with a space after:COMMAND MENUmonthly - View monthly salesyearly  - View yearly summaryedit    - Edit sales for a monthexit    - Exit program Step 2Define a main() functionCall the display_title() function and the display_menu() function created in step 1.Test the program to see if the functions work as expected. You should see the title and the command menuCreate a new variable named sales and assign it the value of read_sales() function. Define a new read_sales() functionAssign sales to an empty arraysales = []Open the csv file, read the file, and close the file.with open(FILENAME, newline=&#34;&#34;) as file:        reader = csv.reader(file)        for row in reader:            sales.append(row)return salesStep 3Back in the main methodCreate a while loop that executes until the user types exit.Inside the loop, store the user's input in a variable called &#34;command&#34;Next, create an if, elif, elif,... for each of the command menu items while True:        command = input(&#34;Command: &#34;)        if command == &#34;monthly&#34;:            view_monthly_sales(sales)        elif command == &#34;yearly&#34;:            view_yearly_summary(sales)        elif command == &#34;edit&#34;:            edit(sales)        elif command == &#34;exit&#34;:            break        else:            print(&#34;Not a valid command. Please try again.
&#34;)    print(&#34;Bye!&#34;)HINT: Notice the functions are not yet created. We will do this in the next few steps.Add the following at the bottom of your code:if __name__ == &#34;__main__&#34;:  main() Step 4Create a view_monthly_sales(sales) function that receives the sales as a parameter.In the view_monthly_sales(sales) function, create a for loop that loops through all items.for row in sales:      print(f&#34;{row[0]} - {row[1]}&#34;)Add a space after using the print() functionStep 5Create a view_yearly_summary(sales) function that receives the sales as a parameterCreate a total variable and set it equal to 0.Create a for loop that loops through each row in the sales.Create an amount variable and assign it to the integer value in row 2 (row[1]).Add to the total the amount received in that row (total += amount)Get the count and store it in a variable named &#34;count&#34; (count = len(sales)).Create an average variable and assign it to the total / count (average = total / count)Round the average to two decimal places.Display the yearly total and the monthly averageAdd a space below the results.for row in sales:        amount = int(row[1])        total += amount    # get count    count = len(sales)        # calculate average    average = total / count    average = round(average, 2)    # format and display the result    print(&#34;Yearly total:    &#34;, total)    print(&#34;Monthly average: &#34;, average)            print()Step 6Create an edit(sales) function that receives the sales as a parameterCreate a new variable named &#34;names&#34; in the new edit function.Assign it a list of abbreviated months (names = ['Jan', 'Feb, 'Mar', ... ])Create another variable named &#34;name&#34; and assign it the user's input for the month.Make sure it is not case sensitive (name = name.title())If the input DOES NOT exist in the names list, display &#34;Invalid three-letter month.&#34;If it does exist, move to step 6.Step 7Create a variable named &#34;index&#34; and assign it the value of index of the month entered (index = names.index(name))Create a variable in the if statement named &#34;amount&#34; and assign it the value of an integer from the user's input (amount = int(input(&#34;Sales Amount: &#34;))Create a &#34;month&#34; variable and assign it an empty list (month = [])Append the name to the list as well as the amountmonth.append(name)        month.append(str(amount))Add the month and amount to the sales list at the correct index (sales[index] = month)Call the method write_sales(sales) that we will create in step 7.Show the text &#34;Sales amount for {month[0]} was modified.&#34;Add a space using the print() function.Step 8Create the write_sales(sales) function and have sales as a parameter.Similar to the read() function, we will need to open, write, and close the filewith open(FILENAME, &#34;w&#34;, newline=&#34;&#34;) as file:        writer = csv.writer(file)        writer.writerows(sales)Step 9Test the application thoroughly to ensure there are no syntax or logical errors.Add a line of pseudo-code for EACH line of source code you created.Save the file.

Accepted Answer

Code:
#!/usr/local/bin/python3
def main():    # initalizing filename and valid months    filename =…

Jan	14317
Feb	3903
Mar	1073
Apr	3463
May	2429
Jun	4324
Jul	9762
Aug	15578
Sep	2437
Oct	6735
Nov	88
Dec	2497