docs/library: Document that sys.version_info returns a 3-tuple only.

See issue #4970.
2019-08-06 16:18:07 +10:00 · 2019-08-06 16:18:07 +10:00 · d5a7741606
commit d5a7741606
parent 6592a30f4b
1 changed files with 6 additions and 0 deletions
--- a/docs/library/sys.rst
+++ b/docs/library/sys.rst
@ -134,3 +134,9 @@ Constants
 .. data:: version_info

   Python language version that this implementation conforms to, as a tuple of ints.
+
+    .. admonition:: Difference to CPython
+      :class: attention
+
+      Only the first three version numbers (major, minor, micro) are supported and
+      they can be referenced only by index, not by name.