"""Collection utilities."""
from typing import List, TypeVar
TypeListContents = TypeVar("TypeListContents")
[docs]
def unique_list(
non_unique_list: List[TypeListContents]
) -> List[TypeListContents]:
"""Create a unique list from a list of objects.
:param non_unique_list: A list of objects that is not known to be unique.
:returns: A new list containing only unique objects from non_unique_list.
"""
created_list: List[TypeListContents] = []
for item in non_unique_list:
if item not in created_list:
created_list.append(item)
return created_list