Py39...

src/python_spectrometer/_plot_manager.py

@@ -30,7 +30,7 @@ class PlotManager:
                  plot_amplitude: bool = True, plot_density: bool = True,
                  plot_cumulative_normalized: bool = False, plot_style: _styleT = 'fast',
                  plot_update_mode: str = 'never', plot_dB_scale: bool = False, prop_cycle=None,
-                 raw_unit: str = 'V', processed_unit: str | None = None,
+                 raw_unit: str = 'V', processed_unit: Optional[str] = None,
                  uses_windowed_estimator: bool = True, figure_kw: Optional[Mapping] = None,
                  subplot_kw: Optional[Mapping] = None, gridspec_kw: Optional[Mapping] = None,
                  legend_kw: Optional[Mapping] = None):

src/python_spectrometer/core.py

@@ -380,7 +380,7 @@ class Spectrometer:
                  threaded_acquisition: bool = True,
                  purge_raw_data: bool = False, prop_cycle=None, savepath: _pathT = None,
                  relative_paths: bool = True, compress: bool = True, raw_unit: str = 'V',
-                 processed_unit: str | None = None, figure_kw: Optional[Mapping] = None,
+                 processed_unit: Optional[str] = None, figure_kw: Optional[Mapping] = None,
                  subplot_kw: Optional[Mapping] = None, gridspec_kw: Optional[Mapping] = None,
                  legend_kw: Optional[Mapping] = None):