Python Flaw?

Question

Pls can someone tell me why code 2 output is different from code 1

my_list = [1,2,3,4,2,6,2,2,7,3,8,2]
uniques = []
for item in my_list:
if item not in uniques:
uniques.append(item)
print(uniques)
#OUTPUT
[1,2,3,4,6,7,8]

#Using list comprehension
my_list = [1,2,3,4,2,6,2,2,7,3,8,2]
uniques = []
uniques = [item for item in my_list if item not in uniques]
print(uniques)

#OUTPUT
[1,2,3,4,2,6,2,2,7,3,8,2]

Answer 1

In second one uniques was always empty until list comprehension got completed .

Answer 2

if you want to make it one line, instead of list comprehension use set:

uniques = list(set(mylist))