gh-103099: Link mypy docs from typing.rst (GH-103100)

miss-islington · hauntsaninja · web-flow · commit 1b40618247b7 · 2023-03-30T01:39:49.000-07:00
(cherry picked from commit fda95aa) Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst
@@ -41,10 +41,17 @@ For a summary of deprecated features and a deprecation timeline, please see
 
 .. seealso::
 
+   For a quick overview of type hints, refer to
+   `this cheat sheet <https://mypy.readthedocs.io/en/stable/cheat_sheet_py3.html>`_.
+
+   The "Type System Reference" section of https://mypy.readthedocs.io/ -- since
+   the Python typing system is standardised via PEPs, this reference should
+   broadly apply to most Python type checkers, although some parts may still be
+   specific to mypy.
+
    The documentation at https://typing.readthedocs.io/ serves as useful reference
    for type system features, useful typing related tools and typing best practices.
 
-
 .. _relevant-peps:
 
 Relevant PEPs
