[libgpiod,v2,0/5] bindings: implement python bindings for libgpiod v2

This series adds python bindings for libgpiod v2. The series is split
into several patches for easier review.

In general the python bindings follow what we did for C++ in terms of class
layout except that we leverage python's flexibility to reduce the number of
method variants by allowing different types of arguments.

Because python doesn't have RAII, unlike C++, we provide a module-level
request_lines() helper as gpiod.Chip(path).request_lines(...) one-liner
could lead to the chip left dangling even after the last reference is
dropped.

Because python forces us to dynamically allocate objects all the time even
for fundamental types (which are also immutable) there's no point in trying
to make the EdgeEventBuffer avoid copying the events like we did in C++
for better performance. Python simply isn't designed around speed.

Bartosz Golaszewski (5):
  bindings: python: remove old version
  bindings: python: enum: add a piece of common code for using python's
    enums from C
  bindings: python: add examples for v2 API
  bindings: python: add tests for v2 API
  bindings: python: add the implementation for v2 API

 bindings/python/.gitignore                    |    1 +
 bindings/python/Makefile.am                   |   19 +-
 bindings/python/chip-info.c                   |  126 +
 bindings/python/chip.c                        |  552 ++++
 bindings/python/edge-event-buffer.c           |  301 ++
 bindings/python/edge-event.c                  |  191 ++
 bindings/python/enum/Makefile.am              |    9 +
 bindings/python/enum/enum.c                   |  208 ++
 bindings/python/enum/enum.h                   |   24 +
 bindings/python/examples/gpiodetect.py        |   13 +-
 bindings/python/examples/gpiofind.py          |   12 +-
 bindings/python/examples/gpioget.py           |   28 +-
 bindings/python/examples/gpioinfo.py          |   39 +-
 bindings/python/examples/gpiomon.py           |   53 +-
 bindings/python/examples/gpioset.py           |   36 +-
 bindings/python/exception.c                   |  182 ++
 bindings/python/gpiodmodule.c                 | 2662 -----------------
 bindings/python/info-event.c                  |  175 ++
 bindings/python/line-config.c                 | 1338 +++++++++
 bindings/python/line-info.c                   |  286 ++
 bindings/python/line-request.c                |  713 +++++
 bindings/python/line.c                        |  239 ++
 bindings/python/module.c                      |  281 ++
 bindings/python/module.h                      |   57 +
 bindings/python/request-config.c              |  320 ++
 bindings/python/tests/Makefile.am             |   15 +-
 bindings/python/tests/cases/__init__.py       |   12 +
 bindings/python/tests/cases/tests_chip.py     |  157 +
 .../python/tests/cases/tests_chip_info.py     |   59 +
 .../python/tests/cases/tests_edge_event.py    |  274 ++
 .../python/tests/cases/tests_info_event.py    |  135 +
 .../python/tests/cases/tests_line_config.py   |  250 ++
 .../python/tests/cases/tests_line_info.py     |   90 +
 .../python/tests/cases/tests_line_request.py  |  295 ++
 bindings/python/tests/cases/tests_misc.py     |   53 +
 .../tests/cases/tests_request_config.py       |   77 +
 bindings/python/tests/gpiod_py_test.py        |  827 +----
 bindings/python/tests/gpiomockupmodule.c      |  309 --
 bindings/python/tests/gpiosimmodule.c         |  434 +++
 configure.ac                                  |    3 +-
 40 files changed, 6973 insertions(+), 3882 deletions(-)
 create mode 100644 bindings/python/.gitignore
 create mode 100644 bindings/python/chip-info.c
 create mode 100644 bindings/python/chip.c
 create mode 100644 bindings/python/edge-event-buffer.c
 create mode 100644 bindings/python/edge-event.c
 create mode 100644 bindings/python/enum/Makefile.am
 create mode 100644 bindings/python/enum/enum.c
 create mode 100644 bindings/python/enum/enum.h
 create mode 100644 bindings/python/exception.c
 delete mode 100644 bindings/python/gpiodmodule.c
 create mode 100644 bindings/python/info-event.c
 create mode 100644 bindings/python/line-config.c
 create mode 100644 bindings/python/line-info.c
 create mode 100644 bindings/python/line-request.c
 create mode 100644 bindings/python/line.c
 create mode 100644 bindings/python/module.c
 create mode 100644 bindings/python/module.h
 create mode 100644 bindings/python/request-config.c
 create mode 100644 bindings/python/tests/cases/__init__.py
 create mode 100644 bindings/python/tests/cases/tests_chip.py
 create mode 100644 bindings/python/tests/cases/tests_chip_info.py
 create mode 100644 bindings/python/tests/cases/tests_edge_event.py
 create mode 100644 bindings/python/tests/cases/tests_info_event.py
 create mode 100644 bindings/python/tests/cases/tests_line_config.py
 create mode 100644 bindings/python/tests/cases/tests_line_info.py
 create mode 100644 bindings/python/tests/cases/tests_line_request.py
 create mode 100644 bindings/python/tests/cases/tests_misc.py
 create mode 100644 bindings/python/tests/cases/tests_request_config.py
 delete mode 100644 bindings/python/tests/gpiomockupmodule.c
 create mode 100644 bindings/python/tests/gpiosimmodule.c