[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

ipywidgets_jsonschema/form.py

@@ -439,11 +439,16 @@ def pattern_checker(val):
         def _register_observer(h, n, t):
             widget.observe(h, names=n, type=t)
 
-        warning_label = ipywidgets.Label("", layout=ipywidgets.Layout(color="red", display="none"))
+        warning_label = ipywidgets.Label(
+            "", layout=ipywidgets.Layout(color="red", display="none")
+        )
+
         def _observer(change):
             if not pattern_checker(widget.value):
                 pattern = schema.get("pattern", ".*")
-                warning_label.value = f"Warning: Input does not match the specified pattern"
+                warning_label.value = (
+                    f"Warning: Input does not match the specified pattern"
+                )
                 warning_label.layout.display = "block"
                 change.owner.layout.border = "2px solid red"
             else:
@@ -452,6 +457,7 @@ def _observer(change):
                 warning_label.layout.display = "none"
 
         widget.observe(_observer, names="value", type="change")
+
         def _setter(_d):
             if pattern_checker(_d):
                 widget.value = _d