Remove Duplicate Elements From a List in Python Using in, not in Operators

Python Program to Remove Duplicate Elements From a List Using in, not in Operators

# Remove Duplicate Element From a List Using in, not in operators in Python

# initializing list
test_list = [1, 2, 9, 5, 6, 3, 5, 6, 1]
print("The original list is : " + str(test_list))
 
res = []
for i in test_list:
    if i not in res:
        res.append(i)
 
# printing list after removal
print("The list after removing duplicates : " + str(res))

Ouput:

The original list is : [1, 2, 9, 5, 6, 3, 5, 6, 1]
The list after removing duplicates : [1, 2, 9, 5, 6, 3]