From d82e76b32da01f3f0dcf8af4dc09ec189eb5af53 Mon Sep 17 00:00:00 2001 From: Kovid Goyal Date: Thu, 20 Jan 2022 20:14:41 +0530 Subject: [PATCH] pep8 --- src/calibre/gui2/tweak_book/undo.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/calibre/gui2/tweak_book/undo.py b/src/calibre/gui2/tweak_book/undo.py index 425aa9d25a..29de27f4fc 100644 --- a/src/calibre/gui2/tweak_book/undo.py +++ b/src/calibre/gui2/tweak_book/undo.py @@ -97,8 +97,8 @@ class GlobalUndoHistory(QAbstractListModel): self.states[self.pos].rewind_message = self.states[self.pos].message self.states[self.pos].message = message except IndexError: - raise IndexError('The checkpoint stack has an incorrect position pointer. This should never happen: self.pos = {!r}, len(self.states) = {!r}'.format( - self.pos, len(self.states))) + raise IndexError('The checkpoint stack has an incorrect position pointer.' + f' This should never happen: pos={self.pos!r}, len_states={len(self.states)=}') self.truncate() self.beginInsertRows(ROOT, self.pos+1, self.pos+1) self.states.append(State(new_container))