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author | Ethan Furman <ethan@stoneleaf.us> | 2016-09-08 06:40:31 (GMT) |
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committer | Ethan Furman <ethan@stoneleaf.us> | 2016-09-08 06:40:31 (GMT) |
commit | 54924df2b1c39442594f8a79aa54aad31df72de7 (patch) | |
tree | 1ed823124e5af69aedda968a9edb5ccac55af5ad /Doc/library/enum.rst | |
parent | 97be87a5c83854e994ab4c10eba5713a61a7bd38 (diff) | |
download | cpython-54924df2b1c39442594f8a79aa54aad31df72de7.zip cpython-54924df2b1c39442594f8a79aa54aad31df72de7.tar.gz cpython-54924df2b1c39442594f8a79aa54aad31df72de7.tar.bz2 |
improve Enum docs
Diffstat (limited to 'Doc/library/enum.rst')
-rw-r--r-- | Doc/library/enum.rst | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/Doc/library/enum.rst b/Doc/library/enum.rst index 89a427c..61679e1 100644 --- a/Doc/library/enum.rst +++ b/Doc/library/enum.rst @@ -542,9 +542,9 @@ The next variation of :class:`Enum` provided, :class:`IntFlag`, is also based on :class:`int`. The difference being :class:`IntFlag` members can be combined using the bitwise operators (&, \|, ^, ~) and the result is still an :class:`IntFlag` member. However, as the name implies, :class:`IntFlag` -members also subclass :class:`int` and can be used wherever an :class:`int` is. -Any operation on an :class:`IntFlag` member besides the bit-wise operations -will lose the :class:`IntFlag` membership. +members also subclass :class:`int` and can be used wherever an :class:`int` is +used. Any operation on an :class:`IntFlag` member besides the bit-wise +operations will lose the :class:`IntFlag` membership. .. versionadded:: 3.6 @@ -955,10 +955,11 @@ and raise an error if the two do not match:: ``Enum`` member type """""""""""""""""""" -:class:`Enum` members are instances of an :class:`Enum` class, and even -though they are accessible as `EnumClass.member`, they should not be accessed -directly from the member as that lookup may fail or, worse, return something -besides the ``Enum`` member you looking for:: +:class:`Enum` members are instances of their :class:`Enum` class, and are +normally accessed as ``EnumClass.member``. Under certain circumstances they +can also be accessed as ``EnumClass.member.member``, but you should never do +this as that lookup may fail or, worse, return something besides the +:class:`Enum` member you are looking for:: >>> class FieldTypes(Enum): ... name = 0 @@ -976,16 +977,16 @@ besides the ``Enum`` member you looking for:: Boolean value of ``Enum`` classes and members """"""""""""""""""""""""""""""""""""""""""""" -``Enum`` members that are mixed with non-Enum types (such as +:class:`Enum` members that are mixed with non-:class:`Enum` types (such as :class:`int`, :class:`str`, etc.) are evaluated according to the mixed-in -type's rules; otherwise, all members evaluate as :data:`True`. To make your own -Enum's boolean evaluation depend on the member's value add the following to +type's rules; otherwise, all members evaluate as :data:`True`. To make your +own Enum's boolean evaluation depend on the member's value add the following to your class:: def __bool__(self): return bool(self.value) -``Enum`` classes always evaluate as :data:`True`. +:class:`Enum` classes always evaluate as :data:`True`. ``Enum`` classes with methods |