Question

PYTHON 3 - please show format

Question 2. )

Use the Design Recipe to write a function yesOrNo which has no parameters. When called, it gets input from the user until the user types either 'yes' or 'no', at which point the function should return True if the user typed 'yes' and False if the user typed 'no'. Any other entries by the user are ignored and another value must be input.

For example:

Test	Input	Result
print(yesOrNo())	hello blank no	False

Question 3.)

Write a program that lets the user input integers one at a time at the keyboard until they type the worddone on a line by itself. Print the sum of the values entered. You may assume the user will only enter integers or "done".

For example:

Input	Result
3 5 done	8

Question 4.)

Assume that you have a function called is_prime which consumes a positive number and returns True if the number is prime and False if the number is not prime.

Your task is to now to use the Design Recipe to write a main function, which prompts the user for a positive integer n and prints the first n primes to the console.

If the user input 3, your program should display:

2

3

5

Question 5.)

A variable num has already been defined. Write a while loop which calculates the sum of the perfect squares less than or equal to num. Store the result in the variable acc.

For example, if num is 10, then acc should be 1+4+9=14.

For example:

Question 6.)

In mathematical terms, the sequence F_n of Fibonacci numbers is defined by the recurrence relation:

Fn = Fn-1 + Fn-2

F1 = 1

F0 = 1

The first 12 Fibonacci numbers follow:

1 , 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144.

Use the Design Recipe to write a function called fib which consumes n and returns the nth Fibonacci number. Use accumulation variables to implement your fib function. Hint: you will need three accumulation variables to keep track of Fn and Fn-1 and Fn-2.

You should create special cases for n of 0 or 1 and then use a for loop over the range 2 through n to compute the nth term.

For example:

Test	Result
print(fib(10))	89

Answer 1

1 def yesOrNo(): 3while st "yes" and st"no": 4 st input () 5if st"yes" 6 return True return False 8 9 print(yesorNo)) 10 12 SAMPEL OUTPUT 13 hello 14 blank 15 no 16 False

def yesOrNo():
st = ""
  
# checking it the string is yes or no. If it is neither of them, it asks for input
# else it returns True for yes and False for no
while st != "yes" and st != "no":
st = input()
if st == "yes":
return True
return False

print(yesOrNo())

'''
SAMPEL OUTPUT
hello
blank
no
False
'''