Ch5_2.py

# same as Ch5_1b (loops with user input list of numbers generating the count, total and average) but with max and min values instead of count aveage and total
# Setting the running smallest and largest numbers to none so they are defined
smallest_number = None
largest_number = None

# User input loop
while True:
  string_number = input('Enter a number.')
  
  # Denoting end of loop with 'done' and printing output of smallest and largest numbers from user list
  if string_number == 'done':
    print('Smallest number in list:', smallest_number)
    print('Largest number in list:', largest_number)
    break

  # Not yet done. Process the number.
  else:

    # Catch for non numbers
    try:
      number = float(string_number)
    except:
      print('Invalid entry. Enter a number.')
      continue
  
    # Smallest number compared to each user input to create running update of current smallest number
    if not smallest_number or number < smallest_number:
      smallest_number = number
    
    # Largest number compared to current user entry to maintain running update of current largest number
    if not largest_number or number > largest_number:
      largest_number = number