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| author | Nicko van Someren <nicko@nicko.org> | 2019-11-16 17:07:11 -0700 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2019-12-28 23:55:15 +1100 |
| commit | 4c93955b7b4d3d860aed1551ca6231ac4e388e69 (patch) | |
| tree | 33d4e13a6076d847f98da761febeb5f745e94a3c /py/mpconfig.h | |
| parent | 007a704d82f07d1482dae6f265fecf5710266767 (diff) | |
py/objslice: Add support for indices() method on slice objects.
Instances of the slice class are passed to __getitem__() on objects when
the user indexes them with a slice. In practice the majority of the time
(other than passing it on untouched) is to work out what the slice means in
the context of an array dimension of a particular length. Since Python 2.3
there has been a method on the slice class, indices(), that takes a
dimension length and returns the real start, stop and step, accounting for
missing or negative values in the slice spec. This commit implements such
a indices() method on the slice class.
It is configurable at compile-time via MICROPY_PY_BUILTINS_SLICE_INDICES,
disabled by default, enabled on unix, stm32 and esp32 ports.
This commit also adds new tests for slice indices and for slicing unicode
strings.
Diffstat (limited to 'py/mpconfig.h')
| -rw-r--r-- | py/mpconfig.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/py/mpconfig.h b/py/mpconfig.h index 93d67accd..d6f4d9232 100644 --- a/py/mpconfig.h +++ b/py/mpconfig.h @@ -894,6 +894,11 @@ typedef double mp_float_t; #define MICROPY_PY_BUILTINS_SLICE_ATTRS (0) #endif +// Whether to support the .indices(len) method on slice objects +#ifndef MICROPY_PY_BUILTINS_SLICE_INDICES +#define MICROPY_PY_BUILTINS_SLICE_INDICES (0) +#endif + // Whether to support frozenset object #ifndef MICROPY_PY_BUILTINS_FROZENSET #define MICROPY_PY_BUILTINS_FROZENSET (0) |