Fix pre-commit issues

Author: mandel

src/pdl/pdl_interpreter.py

@@ -1433,7 +1433,7 @@ def step_call(
     if not isinstance(closure, FunctionBlock):
         msg = f"Type error: {block.call} is of type {type(closure)} but should be a function."
         if isinstance(closure, str) and isinstance(scope.get(closure), FunctionBlock):
-            msg += " You might want to call `${ " + block.call + " }`."
+            msg += " You might want to call `${ " + str(block.call) + " }`."
         raise PDLRuntimeError(
             msg,
             loc=append(loc, "call"),
@@ -1449,12 +1449,17 @@ def step_call(
             trace=block.model_copy(),
         )
     f_body = closure.returns
-    f_scope = closure.scope | {"pdl_context": scope["pdl_context"]} | args
-    fun_loc = LocationType(
-        file=closure.location.file,
-        path=closure.location.path + ["return"],
-        table=loc.table,
+    f_scope = (
+        (closure.scope or {}) | {"pdl_context": scope["pdl_context"]} | (args or {})
     )
+    if closure.location is not None:
+        fun_loc = LocationType(
+            file=closure.location.file,
+            path=closure.location.path + ["return"],
+            table=loc.table,
+        )
+    else:
+        fun_loc = empty_block_location
     try:
         result, background, _, f_trace = yield from step_block(
             state, f_scope, f_body, fun_loc

src/pdl/pdl_schema_validator.py

@@ -1,4 +1,4 @@
-from typing import Any
+from typing import Any, Optional
 
 from jsonschema import ValidationError, validate
 
@@ -7,15 +7,19 @@
 from .pdl_schema_utils import get_json_schema, pdltype_to_jsonschema
 
 
-def type_check_args(args: dict[str, Any], params: dict[str, Any], loc) -> list[str]:
+def type_check_args(
+    args: Optional[dict[str, Any]], params: Optional[dict[str, Any]], loc
+) -> list[str]:
     if (args == {} or args is None) and (params is None or params == {}):
         return []
-    args_copy = args.copy()
-    params_copy = params.copy()
-    if args_copy is None:
+    if args is None:
         args_copy = {}
-    if params_copy is None:
+    else:
+        args_copy = args.copy()
+    if params is None:
         params_copy = {}
+    else:
+        params_copy = params.copy()
     # if "pdl_context" not in args_copy:
     #     args_copy["pdl_context"] = "pdl_context"
     # if "pdl_context" not in params_copy: