Issue #18757: Improved cross-references in the concurrent package.

Doc/library/concurrent.futures.rst

@@ -40,7 +40,7 @@ Executor Objects
 
     .. method:: map(func, *iterables, timeout=None)
 
-       Equivalent to ``map(func, *iterables)`` except *func* is executed
+       Equivalent to :func:`map(func, *iterables) <map>` except *func* is executed
        asynchronously and several calls to *func* may be made concurrently.  The
        returned iterator raises a :exc:`TimeoutError` if
        :meth:`~iterator.__next__` is called and the result isn't available

Doc/library/queue.rst

@@ -54,13 +54,15 @@ The :mod:`queue` module defines the following classes and exceptions:
 
 .. exception:: Empty
 
-   Exception raised when non-blocking :meth:`get` (or :meth:`get_nowait`) is called
+   Exception raised when non-blocking :meth:`~Queue.get` (or
+   :meth:`~Queue.get_nowait`) is called
    on a :class:`Queue` object which is empty.
 
 
 .. exception:: Full
 
-   Exception raised when non-blocking :meth:`put` (or :meth:`put_nowait`) is called
+   Exception raised when non-blocking :meth:`~Queue.put` (or
+   :meth:`~Queue.put_nowait`) is called
    on a :class:`Queue` object which is full.
 
 
@@ -181,6 +183,6 @@ Example of how to wait for enqueued tasks to be completed::
       context.
 
    :class:`collections.deque` is an alternative implementation of unbounded
-   queues with fast atomic :func:`append` and :func:`popleft` operations that
-   do not require locking.
+   queues with fast atomic :meth:`~collections.deque.append` and
+   :meth:`~collections.deque.popleft` operations that do not require locking.
 

Doc/library/select.rst

@@ -78,7 +78,7 @@ The module defines the following:
    This is a straightforward interface to the Unix :c:func:`select` system call.
    The first three arguments are sequences of 'waitable objects': either
    integers representing file descriptors or objects with a parameterless method
-   named :meth:`fileno` returning such an integer:
+   named :meth:`~io.IOBase.fileno` returning such an integer:
 
    * *rlist*: wait until ready for reading
    * *wlist*: wait until ready for writing
@@ -104,8 +104,8 @@ The module defines the following:
    objects <file object>` (e.g. ``sys.stdin``, or objects returned by
    :func:`open` or :func:`os.popen`), socket objects returned by
    :func:`socket.socket`.  You may also define a :dfn:`wrapper` class yourself,
-   as long as it has an appropriate :meth:`fileno` method (that really returns
-   a file descriptor, not just a random integer).
+   as long as it has an appropriate :meth:`~io.IOBase.fileno` method (that
+   really returns a file descriptor, not just a random integer).
 
    .. note::
 
@@ -119,7 +119,7 @@ The module defines the following:
 .. attribute:: PIPE_BUF
 
    The minimum number of bytes which can be written without blocking to a pipe
-   when the pipe has been reported as ready for writing by :func:`select`,
+   when the pipe has been reported as ready for writing by :func:`~select.select`,
    :func:`poll` or another interface in this module.  This doesn't apply
    to other kind of file-like objects such as sockets.
 
@@ -147,10 +147,10 @@ object.
 .. method:: devpoll.register(fd[, eventmask])
 
    Register a file descriptor with the polling object.  Future calls to the
-   :meth:`poll` method will then check whether the file descriptor has any pending
-   I/O events.  *fd* can be either an integer, or an object with a :meth:`fileno`
-   method that returns an integer.  File objects implement :meth:`fileno`, so they
-   can also be used as the argument.
+   :meth:`poll` method will then check whether the file descriptor has any
+   pending I/O events.  *fd* can be either an integer, or an object with a
+   :meth:`~io.IOBase.fileno` method that returns an integer.  File objects
+   implement :meth:`!fileno`, so they can also be used as the argument.
 
    *eventmask* is an optional bitmask describing the type of events you want to
    check for. The constants are the same that with :c:func:`poll`
@@ -176,7 +176,7 @@ object.
 
    Remove a file descriptor being tracked by a polling object.  Just like the
    :meth:`register` method, *fd* can be an integer or an object with a
-   :meth:`fileno` method that returns an integer.
+   :meth:`~io.IOBase.fileno` method that returns an integer.
 
    Attempting to remove a file descriptor that was never registered is
    safely ignored.
@@ -288,10 +288,10 @@ linearly scanned again. :c:func:`select` is O(highest file descriptor), while
 .. method:: poll.register(fd[, eventmask])
 
    Register a file descriptor with the polling object.  Future calls to the
-   :meth:`poll` method will then check whether the file descriptor has any pending
-   I/O events.  *fd* can be either an integer, or an object with a :meth:`fileno`
-   method that returns an integer.  File objects implement :meth:`fileno`, so they
-   can also be used as the argument.
+   :meth:`poll` method will then check whether the file descriptor has any
+   pending I/O events.  *fd* can be either an integer, or an object with a
+   :meth:`~io.IOBase.fileno` method that returns an integer.  File objects
+   implement :meth:`!fileno`, so they can also be used as the argument.
 
    *eventmask* is an optional bitmask describing the type of events you want to
    check for, and can be a combination of the constants :const:`POLLIN`,
@@ -330,7 +330,7 @@ linearly scanned again. :c:func:`select` is O(highest file descriptor), while
 
    Remove a file descriptor being tracked by a polling object.  Just like the
    :meth:`register` method, *fd* can be an integer or an object with a
-   :meth:`fileno` method that returns an integer.
+   :meth:`~io.IOBase.fileno` method that returns an integer.
 
    Attempting to remove a file descriptor that was never registered causes a
    :exc:`KeyError` exception to be raised.
@@ -390,8 +390,8 @@ http://www.freebsd.org/cgi/man.cgi?query=kqueue&sektion=2
 
    Value used to identify the event. The interpretation depends on the filter
    but it's usually the file descriptor. In the constructor ident can either
-   be an int or an object with a fileno() function. kevent stores the integer
-   internally.
+   be an int or an object with a :meth:`~io.IOBase.fileno` method. kevent
+   stores the integer internally.
 
 .. attribute:: kevent.filter
 

Doc/library/subprocess.rst

@@ -76,7 +76,7 @@ use cases, the underlying :class:`Popen` interface can be used directly.
    Run command with arguments.  Wait for command to complete. If the return
    code was zero then return, otherwise raise :exc:`CalledProcessError`. The
    :exc:`CalledProcessError` object will have the return code in the
-   :attr:`returncode` attribute.
+   :attr:`~CalledProcessError.returncode` attribute.
 
    The arguments shown above are merely the most common ones, described below
    in :ref:`frequently-used-arguments` (hence the use of keyword-only notation
@@ -122,8 +122,8 @@ use cases, the underlying :class:`Popen` interface can be used directly.
 
    If the return code was non-zero it raises a :exc:`CalledProcessError`. The
    :exc:`CalledProcessError` object will have the return code in the
-   :attr:`returncode` attribute and any output in the :attr:`output`
-   attribute.
+   :attr:`~CalledProcessError.returncode` attribute and any output in the
+   :attr:`~CalledProcessError.output` attribute.
 
    The arguments shown above are merely the most common ones, described below
    in :ref:`frequently-used-arguments` (hence the use of keyword-only notation
@@ -607,14 +607,14 @@ Instances of the :class:`Popen` class have the following methods:
 
 .. method:: Popen.poll()
 
-   Check if child process has terminated.  Set and return :attr:`returncode`
-   attribute.
+   Check if child process has terminated.  Set and return
+   :attr:`~Popen.returncode` attribute.
 
 
 .. method:: Popen.wait(timeout=None)
 
-   Wait for child process to terminate.  Set and return :attr:`returncode`
-   attribute.
+   Wait for child process to terminate.  Set and return
+   :attr:`~Popen.returncode` attribute.
 
    If the process does not terminate after *timeout* seconds, raise a
    :exc:`TimeoutExpired` exception.  It is safe to catch this exception and
@@ -860,8 +860,8 @@ In this section, "a becomes b" means that b can be used as a replacement for a.
 
    In addition, the replacements using :func:`check_output` will fail with a
    :exc:`CalledProcessError` if the requested operation produces a non-zero
-   return code. The output is still available as the ``output`` attribute of
-   the raised exception.
+   return code. The output is still available as the
+   :attr:`~CalledProcessError.output` attribute of the raised exception.
 
 In the following examples, we assume that the relevant functions have already
 been imported from the :mod:`subprocess` module.

Doc/library/threading.rst

@@ -63,7 +63,7 @@ This module defines the following functions:
 
    Set a trace function for all threads started from the :mod:`threading` module.
    The *func* will be passed to  :func:`sys.settrace` for each thread, before its
-   :meth:`run` method is called.
+   :meth:`~Thread.run` method is called.
 
 
 .. function:: setprofile(func)
@@ -72,7 +72,7 @@ This module defines the following functions:
 
    Set a profile function for all threads started from the :mod:`threading` module.
    The *func* will be passed to  :func:`sys.setprofile` for each thread, before its
-   :meth:`run` method is called.
+   :meth:`~Thread.run` method is called.
 
 
 .. function:: stack_size([size])
@@ -825,10 +825,11 @@ This class represents an action that should be run only after a certain amount
 of time has passed --- a timer.  :class:`Timer` is a subclass of :class:`Thread`
 and as such also functions as an example of creating custom threads.
 
-Timers are started, as with threads, by calling their :meth:`start` method.  The
-timer can be stopped (before its action has begun) by calling the :meth:`cancel`
-method.  The interval the timer will wait before executing its action may not be
-exactly the same as the interval specified by the user.
+Timers are started, as with threads, by calling their :meth:`~Timer.start`
+method.  The timer can be stopped (before its action has begun) by calling the
+:meth:`~Timer.cancel` method.  The interval the timer will wait before
+executing its action may not be exactly the same as the interval specified by
+the user.
 
 For example::