Expose get_argument_values as public API

Replicates graphql/graphql-js@d925576

Author: Cito

docs/modules/execution.rst

@@ -33,3 +33,5 @@ Execution
 .. autoclass:: MiddlewareManager
 
 .. autofunction:: get_directive_values
+
+.. autofunction:: get_variable_values

src/graphql/__init__.py

@@ -426,6 +426,7 @@
     default_field_resolver,
     default_type_resolver,
     get_directive_values,
+    get_variable_values,
     # Types
     ExecutionContext,
     ExecutionResult,
@@ -682,6 +683,7 @@
     "default_field_resolver",
     "default_type_resolver",
     "get_directive_values",
+    "get_variable_values",
     "ExecutionContext",
     "ExecutionResult",
     "FormattedExecutionResult",

src/graphql/execution/__init__.py

@@ -17,7 +17,7 @@
 from .map_async_iterator import MapAsyncIterator
 from .subscribe import subscribe, create_source_event_stream
 from .middleware import MiddlewareManager
-from .values import get_directive_values
+from .values import get_directive_values, get_variable_values
 
 __all__ = [
     "create_source_event_stream",
@@ -33,4 +33,5 @@
     "Middleware",
     "MiddlewareManager",
     "get_directive_values",
+    "get_variable_values",
 ]

src/graphql/execution/values.py

@@ -47,8 +47,6 @@ def get_variable_values(
     Prepares a dict of variable values of the correct type based on the provided
     variable definitions and arbitrary input. If the input cannot be parsed to match
     the variable definitions, a GraphQLError will be raised.
-
-    For internal use only.
     """
     errors: List[GraphQLError] = []