Move some logging calls down to DEBUG level.

anntzer · anntzer · commit b4bed78dca9c · 2018-02-16T21:19:56.000-08:00
The idea is that a "normal" import of matplotlib should not trigger log
calls above the DEBUG level.
diff --git a/lib/matplotlib/backends/__init__.py b/lib/matplotlib/backends/__init__.py
@@ -87,7 +87,7 @@ def do_nothing(*args, **kwargs):
     draw_if_interactive = getattr(backend_mod, 'draw_if_interactive',
                                   do_nothing)
 
-    _log.info('backend %s version %s' % (name, backend_version))
+    _log.debug('backend %s version %s', name, backend_version)
 
     # need to keep a global reference to the backend for compatibility
     # reasons. See https://github.com/matplotlib/matplotlib/issues/6092
diff --git a/lib/matplotlib/font_manager.py b/lib/matplotlib/font_manager.py
@@ -1458,7 +1458,7 @@ def _rebuild():
                 _rebuild()
             else:
                 fontManager.default_size = None
-                _log.info("Using fontManager instance from %s", _fmcache)
+                _log.debug("Using fontManager instance from %s", _fmcache)
         except cbook.Locked.TimeoutError:
             raise
         except:
