From 3ecf087ab73bd79f948fb03861c1c870901dd1fa Mon Sep 17 00:00:00 2001 From: heinrich5991 Date: Fri, 17 Oct 2025 09:03:46 +0200 Subject: [PATCH] Fix `AttributeError: module 'gi' has no attribute 'require_version'` On Arch Linux, automatic backend selection fails when [`at-spi2-core`](https://archlinux.org/packages/extra/x86_64/at-spi2-core/files/) is installed but [`python-gobject`](https://archlinux.org/packages/extra/x86_64/python-gobject/files/) is not. Detect this by importign `gi.require_version` directly. ```python >>> import matplotlib.pyplot as plt >>> plt.plot([0, 1], [0, 1]) Traceback (most recent call last): File "", line 1, in plt.plot([0, 1], [0, 1]) ~~~~~~~~^^^^^^^^^^^^^^^^ File "/usr/lib/python3.13/site-packages/matplotlib/pyplot.py", line 3838, in plot return gca().plot( ~~~^^ File "/usr/lib/python3.13/site-packages/matplotlib/pyplot.py", line 2785, in gca return gcf().gca() ~~~^^ File "/usr/lib/python3.13/site-packages/matplotlib/pyplot.py", line 1108, in gcf return figure() File "/usr/lib/python3.13/site-packages/matplotlib/pyplot.py", line 1042, in figure manager = new_figure_manager( num, figsize=figsize, dpi=dpi, facecolor=facecolor, edgecolor=edgecolor, frameon=frameon, FigureClass=FigureClass, **kwargs) File "/usr/lib/python3.13/site-packages/matplotlib/pyplot.py", line 551, in new_figure_manager _warn_if_gui_out_of_main_thread() ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^ File "/usr/lib/python3.13/site-packages/matplotlib/pyplot.py", line 528, in _warn_if_gui_out_of_main_thread canvas_class = cast(type[FigureCanvasBase], _get_backend_mod().FigureCanvas) ~~~~~~~~~~~~~~~~^^ File "/usr/lib/python3.13/site-packages/matplotlib/pyplot.py", line 369, in _get_backend_mod switch_backend(rcParams._get("backend")) ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.13/site-packages/matplotlib/pyplot.py", line 411, in switch_backend switch_backend(candidate) ~~~~~~~~~~~~~~^^^^^^^^^^^ File "/usr/lib/python3.13/site-packages/matplotlib/pyplot.py", line 425, in switch_backend module = backend_registry.load_backend_module(newbackend) File "/usr/lib/python3.13/site-packages/matplotlib/backends/registry.py", line 317, in load_backend_module return importlib.import_module(module_name) ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^ File "/usr/lib/python3.13/importlib/__init__.py", line 88, in import_module return _bootstrap._gcd_import(name[level:], package, level) ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "", line 1387, in _gcd_import File "", line 1360, in _find_and_load File "", line 1331, in _find_and_load_unlocked File "", line 935, in _load_unlocked File "", line 1026, in exec_module File "", line 488, in _call_with_frames_removed File "/usr/lib/python3.13/site-packages/matplotlib/backends/backend_gtk4agg.py", line 4, in from . import backend_agg, backend_gtk4 File "/usr/lib/python3.13/site-packages/matplotlib/backends/backend_gtk4.py", line 19, in gi.require_version("Gtk", "4.0") ^^^^^^^^^^^^^^^^^^ AttributeError: module 'gi' has no attribute 'require_version' ``` Fixes #30654. --- lib/matplotlib/backends/backend_gtk3.py | 6 +++--- lib/matplotlib/backends/backend_gtk4.py | 7 ++++--- 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/lib/matplotlib/backends/backend_gtk3.py b/lib/matplotlib/backends/backend_gtk3.py index 810429d656d0..9c6d6250f486 100644 --- a/lib/matplotlib/backends/backend_gtk3.py +++ b/lib/matplotlib/backends/backend_gtk3.py @@ -10,18 +10,18 @@ CloseEvent, KeyEvent, LocationEvent, MouseEvent, ResizeEvent) try: - import gi + from gi import require_version as gi_require_version except ImportError as err: raise ImportError("The GTK3 backends require PyGObject") from err try: # :raises ValueError: If module/version is already loaded, already # required, or unavailable. - gi.require_version("Gtk", "3.0") + gi_require_version("Gtk", "3.0") # Also require GioUnix to avoid PyGIWarning when Gio is imported # GioUnix is platform-specific and may not be available on all systems try: - gi.require_version("GioUnix", "2.0") + gi_require_version("GioUnix", "2.0") except ValueError: # GioUnix is not available on this platform, which is fine pass diff --git a/lib/matplotlib/backends/backend_gtk4.py b/lib/matplotlib/backends/backend_gtk4.py index a45fa0bc490f..2fe2115b73cf 100644 --- a/lib/matplotlib/backends/backend_gtk4.py +++ b/lib/matplotlib/backends/backend_gtk4.py @@ -9,18 +9,18 @@ KeyEvent, LocationEvent, MouseEvent, ResizeEvent, CloseEvent) try: - import gi + from gi import require_version as gi_require_version except ImportError as err: raise ImportError("The GTK4 backends require PyGObject") from err try: # :raises ValueError: If module/version is already loaded, already # required, or unavailable. - gi.require_version("Gtk", "4.0") + gi_require_version("Gtk", "4.0") # Also require GioUnix to avoid PyGIWarning when Gio is imported # GioUnix is platform-specific and may not be available on all systems try: - gi.require_version("GioUnix", "2.0") + gi_require_version("GioUnix", "2.0") except ValueError: # GioUnix is not available on this platform, which is fine pass @@ -29,6 +29,7 @@ # auto-backend selection logic correctly skips. raise ImportError(e) from e +import gi from gi.repository import Gio, GLib, Gtk, Gdk, GdkPixbuf from . import _backend_gtk from ._backend_gtk import ( # noqa: F401 # pylint: disable=W0611