How to print number from list without using seperator

Question

print(*[1,2,3]) outputs as: 1 2 3 print(*[1,2,3],sep='') outputs as: 123, which is string type.

Is there any way to print [1,2,3] as integer type 123

@Chris_Rands requirement is not to use any string operations — letmecheck, Jun 29 '18 at 12:29
You should say in the question you can't use String operations... Look at https://stackoverflow.com/a/41068065/2308683 — OneCricketeer, Jun 29 '18 at 12:32
@YannVernier It returns `str`, that not what i want. please read the question properly — letmecheck, Jun 29 '18 at 12:32
No it doesn't. It returns `None` after printing the numbers without separation. Printing fundamentally produces strings and there isn't a type named `integer`. What are you asking for? — Yann Vernier, Jun 29 '18 at 12:34

score 2 · Answer 1 · answered Jun 29 '18 at 12:28

2

l = [1, 2, 3]
print(int(''.join(str(e) for e in l)))

answered Jun 29 '18 at 12:28

RedEyed

you are converting `int` to `str` and again to `int`. is there a way that directly from `int` array to `number` in python? – letmecheck Jun 29 '18 at 12:41
There isn't. `int` is an immutable object in python. – RedEyed Jun 29 '18 at 12:42
Even if it was mutable, what algorithm would you offer? You can concatenate bytes, like `int.from_bytes([1, 2, 3], byteorder="big")`, but you will not get `123` because of binary concatenation – RedEyed Jun 29 '18 at 12:50

1 Answers1