Brett Cannon's dummy_thread and dummy_threading modules (SF patch
622537), with some nitpicking editorial changes.
diff --git a/Doc/lib/libdummythreading.tex b/Doc/lib/libdummythreading.tex
new file mode 100644
index 0000000..7eb7076
--- /dev/null
+++ b/Doc/lib/libdummythreading.tex
@@ -0,0 +1,22 @@
+\section{\module{dummy_thread} ---
+ Drop-in replacement for the \module{threading} module}
+
+\declaremodule[dummythreading]{standard}{dummy_threading}
+\modulesynopsis{Drop-in replacement for the threading module.}
+
+This module provides a duplicate interface to the \refmodule{threading} module. It
+is meant to be imported when the \module{threading} module is not provided on a
+platform.
+
+Suggested usage is:
+
+\begin{verbatim}
+try:
+ import threading as _threading
+except ImportError:
+ import dummy_threading as _threading
+\end{verbatim}
+
+Be careful to not use this module where deadlock might occur from a thread
+being created that blocks waiting for another thread to be created. This
+often occurs with blocking I/O.