l
=
[
1
,
2
3
]
list
(
set
(l))
>>>l
>>>[
def
sets(L,M
'L'
):
B
[]
if
M
'R'
:
L
L[::
-
for
x
in
L:
not
B:
B.append(x)
return
__name__
'__main__'
A
7
4
9
6
5
10
print
sets(A,
)