I'm currently creating a program that sums the input from the user and returns it as a float.
When I try to run the code below with inputs such as "20.1", I receive ValueError: could not convert string to float: '.'
Shouldn't 20.1 be accepted as a float value?
abc = []
i = 0
while True:
i += 1
item = input("Transaction " + str(i) + ": ")
if item == '':
break
abc.extend(item)
abc = [float(k) for k in abc]
print(sum(abc[0:len(abc)]))
When you do abc.extend('20.1') you get ['2', '0', '.', '1'] and the issue is that you can't convert . to float, as the error message suggests. You want to use abc.append(item) instead.
This is because extending a list by an iterable object means appending each element of the iterable to the list. A string is iterable over its characters.
For what it's worth, you can also do sum(abc) straight up, you don't need to do do sum(abc[0:len(abc)]).
you should use append instead of extend.
abc = []
i = 0
while True:
i += 1
item = input("Transaction " + str(i) + ": ")
if item == '':
break
abc.append(item)
abc = [float(k) for k in abc]
print(sum(abc[0:len(abc)]))
There are specific inputs for specific things. You want to use the float input
float(input())
raw_input and input are for strings
int(input)
Are for integers
