def _unique_everseen(iterable):
# Adapted from https://docs.python.org/3/library/itertools.html examples
"List unique elements, preserving order. Remember all elements ever seen."
# unique_everseen('AAAABBBCCDAABBB') --> A B C D
seen = set()
seen_add = seen.add
for element in _filterfalse(seen.__contains__, iterable):
seen_add(element)
yield element
def _unique_everseen(iterable):
# Adapted from https://docs.python.org/3/library/itertools.html examples
"List unique elements, preserving order. Remember all elements ever seen."
# unique_everseen('AAAABBBCCDAABBB') --> A B C D
seen = set()
seen_add = seen.add
for element in _filterfalse(seen.__contains__, iterable):
seen_add(element)
yield element