largest = None # set variable value

smallest = None # set variable value

while True: # begin while loop

value = input('Enter a number: ')

if value == 'done':

break

try:

intvalue = int(value) # confirm value is an int / converts to an int

except:

print('Invalid input')

continue # keeps prog running in case of invalid input

if smallest is None:

smallest = intvalue # sets the smallest value to input if None (our initial value)

elif intvalue < smallest: # compares if less than current smallest value

smallest = intvalue # if returns true , then sets that as the current

# current smallest value

if largest is None: # same as above but in reverse direction

largest = intvalue # to set largest values inputted

elif intvalue > largest:

largest = intvalue

print('Maximum is', largest) # returns to screen max and min values

print('Minimum is', smallest)