Add base -> colour support, and optimization in errors.py.

discord/colour.py

@@ -83,6 +83,24 @@ class Colour:
             raise TypeError(f'Expected int parameter, received {value.__class__.__name__} instead.')
 
         self.value: int = value
+    
+    @staticmethod
+    def from_hex(self, value: str, base:int = None):
+      """
+      Initiate self.value from different base(hexidecimal, binary)
+      =======
+      
+      value `str` : 
+      
+        value in different base, e.g. white in hexidecimal, 0xffffff
+      
+      base `int` (optional) :
+
+        base of your value, if you don't supply this, you have to add a prefix to your number, e.g. 0x or 0b
+
+      """
+
+      return Colour(value = int(value, base=base))
 
     def _get_byte(self, byte: int) -> int:
         return (self.value >> (8 * byte)) & 0xff

discord/ext/commands/errors.py

@@ -110,7 +110,7 @@ class CommandError(DiscordException):
     from :class:`.Bot`\, :func:`.on_command_error`.
     """
     def __init__(self, message: Optional[str] = None, *args: Any) -> None:
-        if message is not None:
+        if message: # replace 'if not none' with 'if message'
             # clean-up @everyone and @here mentions
             m = message.replace('@everyone', '@\u200beveryone').replace('@here', '@\u200bhere')
             super().__init__(m, *args)