Issue 27921: Remove backslash from another f-string. I'll revert this change before beta 2. I also need to look in to why test_tools/test_unparse fails with the files that are now being skipped.
diff --git a/Lib/traceback.py b/Lib/traceback.py
index 6fc6436..a15b818 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -402,7 +402,7 @@
                 count += 1
             else:
                 if count > 3:
-                    result.append(f'  [Previous line repeated {count-3} more times]''\n')
+                    result.append(f'  [Previous line repeated {count-3} more times]'+'\n')
                 last_file = frame.filename
                 last_line = frame.lineno
                 last_name = frame.name
@@ -419,7 +419,7 @@
                     row.append('    {name} = {value}\n'.format(name=name, value=value))
             result.append(''.join(row))
         if count > 3:
-            result.append(f'  [Previous line repeated {count-3} more times]''\n')
+            result.append(f'  [Previous line repeated {count-3} more times]'+'\n')
         return result