Step $4$: Python only supports while loops, so endProgram must be initialized to $\text{'}$no$\text{'}.$ create a variable called endProgram and set it to $\text{'}$no$\text{'}$ such as:

endProgram $=\text{'}$no$\text{'}$

Step $5$: The next step is to write a while statement with the condition of endProgram $==\text{'}$no$\text{'}$:$.$ The statement should be aligned with the statement in Step $4.$ The code should be as follows:

while endProgram $==\text{'}$no$\text{'}$:

Step $6$: The next step is to modify the loop control variable. This is done with a simple input statement such as:

endProgram $=$ input$(\text{'}$Do you want to end the program? $($Enter yes or no$)$: $\text{'})$

Step $7$: The first step should be to set your variables to values. In Python and most programming languages, in order for variables to be used, they need to have a starting value. This also allows for a reset of the variables when the program runs again. Set totalBottles and todayBottles to $0$ and counter to $1.$ Your code should look as follows:

totalBottles $=0$

todayBottles $=0$

counter $=1$

Step $8$: Write a while loop with the condition of counter $<=7.$ This code should look as follows:

while counter $<=7$:

Step $9$: Inside the while loop, write a statement that allows the user to enter the number of bottles for today. This code should look as follows:

todayBottles $=$ input$(\text{'}$Enter number of bottles for today: $\text{'})$

Step $10$: Next, write the accumulator statement. This code should look as follows:

totalBottles $=$ totalBottles $+$ todayBottles

Step $11$: The last statement inside the loop should increment counter by one so the loop will end after seven iterations. This code should look as follows:

counter $=$ counter $+1$

Step $12$: Create a definition for calcPayment. This part should first reset totalPayout to $0.$ This is done so that on multiple iterations of the program, totalPayout is reset to $0.$ The second step is to calculate totalPayout as totalBottles times $\mathrm{.}10.$ The last step is to return totalPayout. Your code should look as follows:

totalPayout $=0$

totalPayout $=$ totalBottles $*\mathrm{.}10$

Step $13$: The final part can display the total number of bottles returned and the total amount paid out. Your code should look as follows:

print 'The total number of bottles collected is$\text{'},$ totalBottles

print 'The total paid out is $$\text{'},$ totalPayout