Answer 1

List comprehension
print(list(i+1 if i%2==0 else i-1 for i in range(50)))

Answer 2

[i+1 if i%2==0 else i-1 for i in range(50) ]

Answer 3

мʀυηαlι ʀαנρυт usually we create a list of items using this shorthand expression: [i for i in range(50)] ,
now we are just checking if that i%2 results in 0 ,if yes do i+1 else do i-1
so it takes this form
[i+1 if i%2==0 else i-1 for i in range(50)]
I think if you read it carefully it's self explanatory ,

Answer 4

как дела???

Answer 5

Use list comprehension