parameters: (l)
return_statement: return [seen.setdefault(e, e) for e in l if e not in seen]
docstring: Removes duplicate elements from l, keeping the first element.
docstring_summary: Removes duplicate elements from l, keeping the first element.
docstring_tokens: Removes duplicate elements from l keeping the first element .
function: def Unify(l):
    """Removes duplicate elements from l, keeping the first element."""
    seen = {}
    return [seen.setdefault(e, e) for e in l if e not in seen]
function_tokens: def Unify ( l ) : seen = { } return [ seen . setdefault ( e , e ) for e in l if e not in seen ]