ValueError: could not convert string to float — user input with Python -

i'm trying write 'while' loop takes users input, if number remembers it, if blank space breaks. @ end should print average of entered numbers. giving me error 'could not convert string float: '. wrong here? thanks!

edit: re-wrote , same error converting, seems on final (count += 1) line?

number = 0.0 count = 0  while true:     user_number = input('enter number: ')     if user_number == ' ':         break         print (number / count)     number = number + float(user_number)     count += 1 

my guess directly hit enter when don't want pass numbers anymore. in case, comparing space incorrect.

number = 0.0 count = 0  while true:     user_number = input('enter number: ')     if user_number == '':         break      number += float(user_number)     count += 1  print (number / count) 

also statement after break unreachable.

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if want cleaner alternative, recommend appending list, , computing average. removes need separate counter. try this:

numbers = [] while true:     user_number = input('enter number: ')     if user_number == '':         break                  numbers.append(float(user_number))  print (sum(numbers) / len(numbers)) 

additionally, remove need break testing in head of while, you'll need take additional input outside loop.