The following valid Python samples from https://peps.python.org/pep-0701/ running under 3.12.0rc1 will cause exceptions in YAPF.

1. bag = {'wand': 'Elder'}
   print(f'Magic wand: { bag['wand'] }')

2. source = 'a_file.py'
   print(f"{source.removesuffix(".py")}.c: $(srcdir)/{source}")

3. print(f"{f"{f"{f"{f"{f"{1+1}"}"}"}"}"}")

4. print(f"{'':*^{1:{1:{1}}}}")

5. x = 1
   y = 2
   print(
       f"___{
           x
       }___"
   )
   print(
       f"___{(
           y
       )}___"
   )

6. my_dict = {"key": "value"}
   print(f" something { my_dict["key"] } something else ")