[Enhance] Remove blink info and debug level message (#371)

* remove blink info debug msg

* minor refine

* minor refine

mmengine/logging/logger.py

@@ -19,18 +19,24 @@ class MMFormatter(logging.Formatter):
     Args:
         color (bool): Whether to use colorful format. filehandler is not
             allowed to use color format, otherwise it will be garbled.
+        blink (bool): Whether to blink the ``INFO`` and ``DEBUG`` logging
+            level.
+        **kwargs: Keyword arguments passed to
+            :meth:`logging.Formatter.__init__`.
     """
     _color_mapping: dict = dict(
         ERROR='red', WARNING='yellow', INFO='white', DEBUG='green')
 
-    def __init__(self, color: bool = True, **kwargs):
-
+    def __init__(self, color: bool = True, blink: bool = False, **kwargs):
         super().__init__(**kwargs)
+        assert not (not color and blink), (
+            'blink should only be available when color is True')
         # Get prefix format according to color.
-        error_prefix = self._get_prefix('ERROR', color)
-        warn_prefix = self._get_prefix('WARNING', color)
-        info_prefix = self._get_prefix('INFO', color)
-        debug_prefix = self._get_prefix('DEBUG', color)
+        error_prefix = self._get_prefix('ERROR', color, blink=True)
+        warn_prefix = self._get_prefix('WARNING', color, blink=True)
+        info_prefix = self._get_prefix('INFO', color, blink)
+        debug_prefix = self._get_prefix('DEBUG', color, blink)
+
         # Config output format.
         self.err_format = (f'%(asctime)s - %(name)s - {error_prefix} - '
                            '%(pathname)s - %(funcName)s - %(lineno)d - '
@@ -42,21 +48,22 @@ class MMFormatter(logging.Formatter):
         self.debug_format = (f'%(asctime)s - %(name)s - {debug_prefix} - %('
                              'message)s')
 
-    def _get_prefix(self, level: str, color: bool) -> str:
+    def _get_prefix(self, level: str, color: bool, blink=False) -> str:
         """Get the prefix of the target log level.
 
         Args:
             level (str): log level.
             color (bool): Whether to get colorful prefix.
+            blink (bool): Whether the prefix will blink.
 
         Returns:
             str: The plain or colorful prefix.
         """
         if color:
-            prefix = colored(
-                level,
-                self._color_mapping[level],
-                attrs=['blink', 'underline'])
+            attrs = ['underline']
+            if blink:
+                attrs.append('blink')
+            prefix = colored(level, self._color_mapping[level], attrs=attrs)
         else:
             prefix = level
         return prefix