list = input('Input a list of numbers separated by comma then space:
')
try:
list = list.split(', ')
sum = 0
for number in list:
sum = int(number) + sum
avg = sum / len(list)
print('The average of the numbers you entered is: ', avg)
except ValueError:
print('Please enter a list of number separated by a comma and space only')
def mean(numbers):
total = 0
for number in numbers:
total += number
return total / len(numbers)