Modernize code to use f-strings

This also removes the encoding on the top, since Python 3 does it by
default. It also changes some methods to use `yield from`.

1 files changed, 4 insertions, 6 deletions

diff --git a/discord/colour.py b/discord/colour.py
index fbf9aaef..3296afb7 100644
--- a/discord/colour.py
+++ b/discord/colour.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 """
 The MIT License (MIT)
 
@@ -61,7 +59,7 @@ class Colour:
 
     def __init__(self, value):
         if not isinstance(value, int):
-            raise TypeError('Expected int parameter, received %s instead.' % value.__class__.__name__)
+            raise TypeError(f'Expected int parameter, received {value.__class__.__name__} instead.')
 
         self.value = value
 
@@ -75,10 +73,10 @@ class Colour:
         return not self.__eq__(other)
 
     def __str__(self):
-        return '#{:0>6x}'.format(self.value)
+        return f'#{self.value:0>6x}'
 
     def __repr__(self):
-        return '<Colour value=%s>' % self.value
+        return f'<Colour value={self.value}>'
 
     def __hash__(self):
         return hash(self.value)
@@ -132,7 +130,7 @@ class Colour:
         Parameters
         ------------
         seed: Optional[Union[:class:`int`, :class:`str`, :class:`float`, :class:`bytes`, :class:`bytearray`]]
-            The seed to initialize the RNG with. If ``None`` is passed the default RNG is used. 
+            The seed to initialize the RNG with. If ``None`` is passed the default RNG is used.
 
             .. versionadded:: 1.7
         """