Docs updates
- Update docs copyright.
- Remove duplicate title in index.rst.
- Update note about Python 2 compatibility, since most Pigweed code
requires Python 3.
Change-Id: I9c61a55c622b162317ab7fc4c5eec5fdf292bb02
diff --git a/docs/style_guide.rst b/docs/style_guide.rst
index 6254d0f..b40dbdd 100644
--- a/docs/style_guide.rst
+++ b/docs/style_guide.rst
@@ -515,10 +515,7 @@
https://www.python.org/dev/peps/pep-0008/. All Pigweed Python code should pass
``yapf`` when configured for PEP8 style.
-Python 2 and 3
-==============
-All Pigweed module Python code must be compatible with both Python 2.7 and
-Python 3. Pigweed tools, for example the ``pw`` shell command, are Python 3
-only.
-
-Python 2 support may be dropped in the future.
+Python 3
+========
+Pigweed uses Python 3. Some modules may offer limited support for Python 2, but
+Python 3.6 or newer is required for most Pigweed code.