re = pyimport "re"

.get_file_dirname!: () => Str

.path_join: (__a: Str, path: Str) => Str

.str_slice: (str: Str, first_index: Nat) => Str

'''
! this is unsafe
'''
.eliminate_none_on_match: (matched: re.Match or NoneType) -> {.matched = re.Match; .is_none = Bool}