Python 更改格式时更改列表的顺序

Question

I am trying to change the format of all items in my list from float to integer. My code seem to do the job, however it is changing the order of the items in the list.

A reproducible example:

l = [-1.0, 0.0, 1.0]
[int(f'{float(l[int(i)]):g}') for i in l]

>>> Out: [1, -1, 0]

Any idea how to avoid the re-arrangement of these elements?

Thank you.

Answer 1

l[int(i)]) <- you're accessing the list positions by index here. Just re-write your code using map:

l = [-1.0, 0.0, 1.0]
o = list(map(int, l))
print(o)

Output:

[-1, 0, 1]

Answer 2

You are overthinking this, simply do:

l = [-1.0, 0.0, 1.0]
[int(i) for i in l]

Answer 3

You could use both comprehension list and functional programming:

l = [-1.0, 0.0, 1.0]
result1 = [int(i) for i in l]
result2 = list(map(int, l))