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

Per Bratthammar thats cool!

Answer 4

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 5

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 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)

Answer 11

The split function produces an array.

>> inp = “1,2,4”.split(“,”)
>> print(inp)
>> # [1,2,4]
>> print(inp[1])
>> # What do you think the ouput would be here?

Answer 12

So OP wants to get on one hand the input as an integer, and then the value behind the comma