Unable to modify configurations after importing `matplotlib` in `v1.72.0`

[ToryDeng]

In v1.72.0, the following lines of code cause an error:

import matplotlib.pyplot as plt
import ultraplot as uplt

print(uplt.__version__)
uplt.rc["figure.facecolor"] = "white"

1.72.0

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
Cell In[2], line 5
      2 import ultraplot as uplt
      4 print(uplt.__version__)
----> 5 uplt.rc["figure.facecolor"] = "white"

File /usr/local/miniforge3/envs/svg/lib/python3.11/site-packages/ultraplot/__init__.py:235, in __getattr__(name)
    232     globals()[name] = basemap
    233     return basemap
--> 235 return _LOADER.get_attr(name, globals())

File /usr/local/miniforge3/envs/svg/lib/python3.11/site-packages/ultraplot/_lazy.py:179, in LazyLoader.get_attr(self, name, module_globals)
    177 if attr_map and name in attr_map:
    178     module_name, attr_name = attr_map[name]
--> 179     self._setup()
    180     module = self._import_module(module_name)
    181     value = getattr(module, attr_name) if attr_name else module

File /usr/local/miniforge3/envs/svg/lib/python3.11/site-packages/ultraplot/__init__.py:63, in _setup()
     61 success = False
     62 try:
---> 63     from .config import (
     64         rc,
     65         register_cmaps,
     66         register_colors,
     67         register_cycles,
     68         register_fonts,
     69     )
     70     from .internals import (
     71         fonts as _fonts,  # noqa: F401 - ensure mathtext override is active
     72     )
     73     from .internals import rcsetup, warnings

File /usr/local/miniforge3/envs/svg/lib/python3.11/site-packages/ultraplot/config.py:1850
   1846 rc_ultraplot = rcsetup._rc_ultraplot_default.copy()  # a validated rcParams-style dict
   1848 #: Instance of `Configurator`. This controls both `rc_matplotlib` and `rc_ultraplot`
   1849 #: settings. See the :ref:`configuration guide <ug_config>` for details.
-> 1850 rc = Configurator()
   1852 # Deprecated
   1853 RcConfigurator = warnings._rename_objs(
   1854     "0.8.0",
   1855     RcConfigurator=Configurator,
   1856 )

File /usr/local/miniforge3/envs/svg/lib/python3.11/site-packages/ultraplot/config.py:793, in Configurator.__init__(self, local, user, default, **kwargs)
    791 self._context = []
    792 self._setting_handlers = {}
--> 793 self._init(local=local, user=user, default=default, **kwargs)

File /usr/local/miniforge3/envs/svg/lib/python3.11/site-packages/ultraplot/config.py:897, in Configurator._init(self, local, user, default)
    895 if default:
    896     rc_matplotlib.update(_get_style_dict("original", filter=False))
--> 897     rc_matplotlib.update(rcsetup._rc_matplotlib_default)
    898     rc_ultraplot.update(rcsetup._rc_ultraplot_default)
    899     for key, value in rc_ultraplot.items():

File <frozen _collections_abc>:949, in update(self, other, **kwds)

File /usr/local/miniforge3/envs/svg/lib/python3.11/site-packages/matplotlib/__init__.py:774, in RcParams.__setitem__(self, key, val)
    772         cval = self.validate[key](val)
    773     except ValueError as ve:
--> 774         raise ValueError(f"Key {key}: {ve}") from None
    775     self._set(key, cval)
    776 except KeyError as err:

ValueError: Key axes.titlesize: med-large is not a valid font size. Valid font sizes are xx-small, x-small, small, medium, large, x-large, xx-large, smaller, larger.

However, in 1.70.0, they work fine:

import matplotlib.pyplot as plt
import ultraplot as uplt

print(uplt.__version__)
uplt.rc["figure.facecolor"] = "white"

1.70.0

[cvanelteren]

Thanks. This is still a remnant from the lazy importing. Got a fix.

[cvanelteren]

Fixed on main

[cvanelteren]

Will release the fix this week if you don't wanna run the git version. Apologies for the inconvenience.