chore(python): disable import format warning (#2477)

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Author: chaokunyang

python/pyfory/__init__.py

@@ -52,8 +52,12 @@
 )
 from pyfory._util import Buffer  # noqa: F401 # pylint: disable=unused-import
 
+import warnings
+
 try:
-    from pyfory.format import *  # noqa: F401,F403 # pylint: disable=unused-import
+    with warnings.catch_warnings():
+        warnings.filterwarnings("ignore", category=RuntimeWarning)
+        from pyfory.format import *  # noqa: F401,F403 # pylint: disable=unused-import
 except (AttributeError, ImportError):
     pass