python functools total ordering
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functools.total_ordering makes adding all of six of the rich comparison operators to your custom classes much easier, and more likely that you remember all...

Date: January 14, 2022

functools.total_ordering makes adding all of six of the rich comparison operators to your custom classes much easier, and more likely that you remember all of them.

│ From the Docs: The class must define one of __lt__(), __le__(), __gt__(), or __ge__ In addition, the class should supply an __eq__() method.

one of these

- lt

  ()
- le

  ()
- gt

  ()
- ge

  ()

and required to have this one

- eq

  ()

Total Ordering Docs <https://docs.python.org/3/library/functools.html#functools.total_ordering>

Here is an example using the Enum I was working on the other day.

[code]
  from enum import Enum, auto
  from functools import total_ordering
  
  
  @total_ordering
  class LifeCycle(Enum):
  
      configure = auto()
      glob = auto()
      load = auto()
      pre_render = auto()
      render = auto()
      post_render = auto()
      save = auto()
  
      def __lt__(self, other):
          try:
              return self.value < other.value
          except AttributeError:
              return self.value < other
  
      def __eq__(self, other):
          try:
              return self.value == other.value
          except AttributeError:
              return self.value == other