Roundup Robot added the comment: New changeset 1d8b8a67b657 by Jason R. Coombs in branch '3.6': Additionally show that a backslash-escaped opening brace is treated as a literal and thus triggers the single closing brace error, clarifying #28590. https://hg.python.org/cpython/rev/1d8b8a67b657 ---------- nosy: +python-dev _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue28590> _______________________________________