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.venv/Lib/site-packages/plotly/validator_cache.py

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+import importlib
+from _plotly_utils.basevalidators import LiteralValidator
+
+
+class ValidatorCache(object):
+    _cache = {}
+
+    @staticmethod
+    def get_validator(parent_path, prop_name):
+
+        key = (parent_path, prop_name)
+        if key not in ValidatorCache._cache:
+
+            if "." not in parent_path and prop_name == "type":
+                # Special case for .type property of traces
+                validator = LiteralValidator("type", parent_path, parent_path)
+            else:
+                lookup_name = None
+                if parent_path == "layout":
+                    from .graph_objects import Layout
+
+                    match = Layout._subplotid_prop_re.match(prop_name)
+                    if match:
+                        lookup_name = match.group(1)
+
+                lookup_name = lookup_name or prop_name
+                class_name = lookup_name.title() + "Validator"
+                validator = getattr(
+                    importlib.import_module("plotly.validators." + parent_path),
+                    class_name,
+                )(plotly_name=prop_name)
+            ValidatorCache._cache[key] = validator
+
+        return ValidatorCache._cache[key]