Ruff

Author: antonymilne

plotly/express/_core.py

@@ -1053,9 +1053,9 @@ def apply_default_cascade(args, constructor):
                     if hasattr(trace_data, "marker")
                     and hasattr(trace_data.marker, "color")
                 ]
-                # If template contains at least one color for this trace type, assign to color_discrete_sequence  
-                if any(trace_specific_colors):  
-                    args["color_discrete_sequence"] = trace_specific_colors  
+                # If template contains at least one color for this trace type, assign to color_discrete_sequence
+                if any(trace_specific_colors):
+                    args["color_discrete_sequence"] = trace_specific_colors
         # fallback to layout.colorway if trace-specific colors not available
         if args["color_discrete_sequence"] is None and args["template"].layout.colorway:
             args["color_discrete_sequence"] = args["template"].layout.colorway

tests/test_optional/test_px/test_px.py

@@ -1,6 +1,7 @@
 from itertools import permutations
 import warnings
 
+import pandas as pd
 import plotly.express as px
 import plotly.io as pio
 import narwhals.stable.v1 as nw
@@ -227,8 +228,6 @@ def test_px_templates(backend):
 
 
 def test_px_templates_trace_specific_colors(backend):
-    import pandas as pd
-
     tips = px.data.tips(return_type=backend)
 
     # trace-specific colors: each trace type uses its own template colors