Write a Python program: a.Prompt the user to enter starting number, increment, a

Question

Write a Python program:

a.Prompt the user to enter starting number, increment, and the ending number (all integers).

b.Sum up the number from starting number through the ending number with increment entered. For example, (1,10,1) will imply starting number of 1 and ending number of 10, and increment of 1. (i.e. 1,2,3,4,5,6,7,8,9,10).

c.Program should check for validity of numbers entered. If user enters invalid combination such as (1,10, -1), re-prompt the user to enter proper set of numbers.

d.Display the sum of the numbers.

e.Display the average of the numbers.

f.Display the total number of items added.

g.For example, if user entered (1,10,1). The sum should be 55. The average should be 5.5, and, the number of items = 10.

h.Prompt the user

Explanation / Answer

def check(start, inc, end):
   if inc <= 0: return False
   if start > end: return False
   return True
  
def work():
   start = int(raw_input('Enter starting number: '))
   inc = int(raw_input('Enter increment: '))
   end = int(raw_input('Enter ending number: '))
   sum = 0
   added = 0
   average = 0.0
   if(check(start, inc, end)): # check if values are valid
       for i in range(start, end+1, inc):
           sum += i
           added += 1
  
       average = float(sum) / float(added)
       print "Sum: %d" % sum
       print "Average: %f" % average
       print "Number of items: %d" % added
   else:
       print "Invalid values! Enter again ";
       work() # If invalid then recursively call this function again

if __name__ == '__main__':
   again = True # Used for re-running the program
   while again:
       work()
       ans = raw_input('Dou you want to continue (yes/no): ')
       if(ans[0].lower() == 'y'): # taking the first character of the ans
           again = True
       else:
           again = False
  

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