done

lib/python3.11/site-packages/plotly/express/_special_inputs.py

@@ -0,0 +1,40 @@
+class IdentityMap(object):
+    """
+    `dict`-like object which acts as if the value for any key is the key itself. Objects
+    of this class can be passed in to arguments like `color_discrete_map` to
+    use the provided data values as colors, rather than mapping them to colors cycled
+    from `color_discrete_sequence`. This works for any `_map` argument to Plotly Express
+    functions, such as `line_dash_map` and `symbol_map`.
+    """
+
+    def __getitem__(self, key):
+        return key
+
+    def __contains__(self, key):
+        return True
+
+    def copy(self):
+        return self
+
+
+class Constant(object):
+    """
+    Objects of this class can be passed to Plotly Express functions that expect column
+    identifiers or list-like objects to indicate that this attribute should take on a
+    constant value. An optional label can be provided.
+    """
+
+    def __init__(self, value, label=None):
+        self.value = value
+        self.label = label
+
+
+class Range(object):
+    """
+    Objects of this class can be passed to Plotly Express functions that expect column
+    identifiers or list-like objects to indicate that this attribute should be mapped
+    onto integers starting at 0. An optional label can be provided.
+    """
+
+    def __init__(self, label=None):
+        self.label = label