bpo-25821: Fix inaccuracy in threading.enumerate/is_alive documentation (GH-23192) (#26035)

(cherry picked from commit 12e7d10dfd28d4e26304e2c06b2e41c7418ec6f3)

Co-authored-by: Irit Katriel <iritkatriel@yahoo.com>

2 files changed, 7 insertions, 6 deletions

diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst
index 16f23c3..8c76643 100644
--- a/Doc/library/threading.rst
+++ b/Doc/library/threading.rst
@@ -121,10 +121,11 @@ This module defines the following functions:
 
 .. function:: enumerate()
 
-   Return a list of all :class:`Thread` objects currently alive.  The list
-   includes daemonic threads, dummy thread objects created by
-   :func:`current_thread`, and the main thread.  It excludes terminated threads
-   and threads that have not yet been started.
+   Return a list of all :class:`Thread` objects currently active.  The list
+   includes daemonic threads and dummy thread objects created by
+   :func:`current_thread`.  It excludes terminated threads and threads
+   that have not yet been started.  However, the main thread is always part
+   of the result, even when terminated.
 
 
 .. function:: main_thread()
diff --git a/Lib/threading.py b/Lib/threading.py
index 4dcf847..fb70abd 100644
--- a/Lib/threading.py
+++ b/Lib/threading.py
@@ -1130,8 +1130,8 @@ class Thread:
         """Return whether the thread is alive.
 
         This method returns True just before the run() method starts until just
-        after the run() method terminates. The module function enumerate()
-        returns a list of all alive threads.
+        after the run() method terminates. See also the module function
+        enumerate().
 
         """
         assert self._initialized, "Thread.__init__() not called"