ValueError: invalid literal for int() with base 10: '' What is wrong

Question

I'm working on a project where I have to create a Mean, Median, Mode, and Range calculator and I keep failing to get the number from the user as input. Here's the code:

print("Mean, Median, Mode, and Range Calculator")
user_input = input("Press 1 to choose Mean , 2 to choose Median, 3 to choose Mode, and 4 to choose Range")

def get_num():
    x = [input("Enter your numbers Without commas ie. 12 34 56: ")]
    x1 = []
    for i in x: 
        x1.append(int(i)) 
        print(x1)


if user_input == '1':
    pass

But I keep getting this error:

ValueError: invalid literal for int() with base 10: '12 34 56'

I've tried using a map, using for to loop through the list but it doesn't work. I don't even know what the error means can someone explain?

Does this answer your question? [ValueError: invalid literal for int() with base 10: ''](https://stackoverflow.com/questions/1841565/valueerror-invalid-literal-for-int-with-base-10) — ChrisGPT was on strike, Jul 14 '20 at 18:04
Yep, just use the `input()` to get the numbers and then apply `split()` and you'll get an iterable `list`and you´ll be able to use `for` loop — Brad Figueroa, Jul 14 '20 at 18:06

pjk · Answer 1 · 2020-07-14T18:16:03.877

2

Try this. Also user_input is undefined. if you're using x1 just to convert to int then you don't need it. map does that for you.

def get_num():
    x = map(int,input("Enter your numbers Without commas ie. 12 34 56: ").split())
    return x


x1 = []
x = get_num()
for i in x:
    x1.append(i)
    print(x1)

edited Jul 14 '20 at 18:16

answered Jul 14 '20 at 18:07

pjk

547
3
14

just ``split()`` is equivalent of ``split(" ")`` – sushanth Jul 14 '20 at 18:13

score 1 · Answer 2 · answered Jul 14 '20 at 18:07

Don't put the call to input() inside a list. To get a list of the words that were entered, use split().

def get_num():
    x = input("Enter your numbers Without commas ie. 12 34 56: ")
    x1 = []
    for i in x.split(): 
        x1.append(int(i)) 
    print(x1)

You can also use a list comprehension.

def get_num():
    x = input("Enter your numbers Without commas ie. 12 34 56: ")
    x1 = [x1.append(int(i)) for i in x.split()]
    print(x1)

score 0 · Answer 3 · answered Jul 14 '20 at 18:58

0

A nice way is to use a map to convert the input to int and use list function to wrap the map.

def get_num():
    x = input("Enter your numbers Without commas ie. 12 34 56: ")
    x1 = list(map(lambda i: int(i), x.split()))
    print(x1)

answered Jul 14 '20 at 18:58

Carlos Saldana

176
4

ValueError: invalid literal for int() with base 10: '' What is wrong

3 Answers3