GH-56426: Add cross-reference to the documentation for faulthandler, traceback, and pdb.

Doc/library/faulthandler.rst

@@ -52,6 +52,8 @@ Dumping the traceback
    Dump the tracebacks of all threads into *file*. If *all_threads* is
    ``False``, dump only the current thread.
 
+   See also :func:`traceback.print_tb` which can be used to print a traceback object.
+
    .. versionchanged:: 3.5
       Added support for passing file descriptor to this function.
 
@@ -179,3 +181,10 @@ handler:
       File "<stdin>", line 1 in <module>
     Segmentation fault
 
+.. seealso::
+
+   Module :mod:`pdb`
+      Interactive source code debugger for Python programs.
+
+   Module :mod:`traceback`
+     Standard interface to extract, format and print stack traces of Python programs.

Doc/library/pdb.rst

@@ -545,6 +545,15 @@ can be overridden by the local file.
 
    Print the return value for the last return of a function.
 
+.. seealso::
+
+   Module :mod:`faulthandler`
+      Used to dump Python tracebacks explicitly, on a fault, after a timeout,
+      or on a user signal.
+
+   Module :mod:`traceback`
+     Standard interface to extract, format and print stack traces of Python programs.
+
 .. rubric:: Footnotes
 
 .. [1] Whether a frame is considered to originate in a certain module

Doc/library/traceback.rst

@@ -537,3 +537,11 @@ This last example demonstrates the final few formatting functions:
    >>> an_error = IndexError('tuple index out of range')
    >>> traceback.format_exception_only(type(an_error), an_error)
    ['IndexError: tuple index out of range\n']
+
+.. seealso::
+
+   Module :mod:`faulthandler`
+      Used to dump Python tracebacks explicitly, on a fault, after a timeout, or on a user signal.
+
+   Module :mod:`pdb`
+      Interactive source code debugger for Python programs.