thread removes *key* from *mapping* after the test, but before the lookup.
This issue can be solved with locks or by using the EAFP approach.
- locale encoding
- On Unix, it is the encoding of the LC_CTYPE locale. It can be set with
- :func:`locale.setlocale(locale.LC_CTYPE, new_locale) <locale.setlocale>`.
-
- On Windows, it is the ANSI code page (ex: ``"cp1252"``).
-
- On Android and VxWorks, Python uses ``"utf-8"`` as the locale encoding.
-
- ``locale.getencoding()`` can be used to get the locale encoding.
-
- See also the :term:`filesystem encoding and error handler`.
-
list
A built-in Python :term:`sequence`. Despite its name it is more akin
to an array in other languages than to a linked list since access to
:term:`finder`. See :pep:`302` for details and
:class:`importlib.abc.Loader` for an :term:`abstract base class`.
+ locale encoding
+ On Unix, it is the encoding of the LC_CTYPE locale. It can be set with
+ :func:`locale.setlocale(locale.LC_CTYPE, new_locale) <locale.setlocale>`.
+
+ On Windows, it is the ANSI code page (ex: ``"cp1252"``).
+
+ On Android and VxWorks, Python uses ``"utf-8"`` as the locale encoding.
+
+ :func:`locale.getencoding` can be used to get the locale encoding.
+
+ See also the :term:`filesystem encoding and error handler`.
+
magic method
.. index:: pair: magic; method