The function `stripped_sys_argv` was broken because of `itertools.groupby` being hidden by the local `groupby`. Aligning APIs makes the local one a valid substitution for `itertools.groupby`.
The function `stripped_sys_argv` was broken because of `itertools.groupby` being hidden by the local `groupby`. Aligning APIs makes the local one a valid substitution for `itertools.groupby`.