difference in while loop

Question

Is there a difference in these two codes:

x = int(input())
i = 0
while i < x:
print(i)
i+=1

vs:

x = int(input())
i = 0
while i in range(x):
print(i)
i+=1

They both output the exact same thing but was wondering, is there a difference?

Answer 1

the code for the speed test and my comments are all in the attached file:

https://code.sololearn.com/c7933FqE2tJv/?ref=app

Answer 2

intresting. Thank you so much everyone!

Answer 3

Oma Falk ,

good idea to make a speed comparison. i will come back with this.

Answer 4

SoloProg Yes, there is no comparison while there is one for if i< n and some more for if i in range(n).

Answer 5

The difference is that the predefined library is usually faster than loops.

But we can get the same outputs

Answer 6

First one might have a better performance

Answer 7

Lothar I remember you are a specialist for it. I am curious about the result.

Answer 8

The test turned out that the for loop was the fastest.

https://code.sololearn.com/cGiG8PC24Hft