For ```python x = 1 digits = 1 print(f"{x:0.{digits:d}f}") # admittedly the :d is not needed in this minimal repro, but still valid. ``` pycodestyle 2.11.1 spuriously complains about a missing whitespace after the second colon in the f-string: ``` test.py:3:21: E231 missing whitespace after ':' ```