[docs] [issue24531] please document that no code preceding encoding declaration is allowed

[Jakub Wilk]

Jakub Wilk added the comment:

Right, I meant <https://docs.python.org/3/reference/lexical_analysis.html#encoding-declarations>.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24531>
_______________________________________