Python

Question

a,b=int(input()).split(',')
print(a)
print(b)

I did this code to separate two inputs inputs its showing error why?

Answer 1

Raine04, Ausgrindtube ,

a, b = int(input()).split(',')
> the code shown from the op fails, because it tries to split an integer coming from input() and int() conversion.

a, b = input().split(',')
> split() does not necessarily create a list. if we modify the code by removing the int() conversion, the code will work if exactly 2 input tokens are given.

a = input().split(',')
> so if we have to handle an unknown number of tokens, it is better to give only 1 variable that will be a list.

if we need to get the input as numerical values (input always return string values by default), they have to be coverted to the desired data format.

Answer 2

as already mentioned, we can convert the input strings to numerical values. this can be done like:

a = list(map(int, input().split(',')))

or we can use a list comprehension like:

c = [int(num) for num in input().split(',')]

both version result in a list of integer numbers.

Answer 3

In Python, you should split the input by calling the `split()` method on the input string directly, not on the result of `int(input())`.

Answer 4

Per Bratthammar thats cool!

Answer 5

Lets try to unpack this no pun intended. 

a, b = input()
print(a)
print(b)

This code unpacks each character of the input string into a and b. For input 12, the output is:
1
2

Now consider:
a, b = int(input())

This code tries to:
1. Get a string from the user.
2. Convert it to a single integer.
3. Unpack this integer into a and b.

This is not possible because int( returns a single integer, resulting in a TypeError.

This code just wrong:
a, b = int(input()).split(",")
Simply put, split(",") can't be called on an integer this way.

Correct approach:

a, b = input().split(',') 
a = int(a)
b = int(b) 
print(a)
print(b)

1.creates a list. [“a”,”b”]
2. Unpack into a and b.
3.Convert a to int
4.convert b to int

Running out of space if you need other examples explained let me know. I’ll try my best!

Answer 6

In Python, unpacking can be done directly from an iterator, like this generator:

>>> a, b = (int(x) for x in input().split(","))

or this map-object:

>>> a, b = map(int, input().split(','))

Answer 7

The split method takes an input and creates a list, so the a,b wouldn't work.
Read here:

https://www.w3schools.com/JUMP_LINK__&&__python__&&__JUMP_LINK/ref_string_split.asp

Answer 8

a,b = tuple(int(x) for x in input().split(","))

Answer 9

a,b = input().split(',')
print(int(a))
print(int(b))

Answer 10

You are trying to call the split() method on a number because you placed the input() function in the int() function

the correct way would be:

a, b = input().split(",")

print(a)
print(b)