Minor inspection

Author: rayokota

src/jsonata/jsonata.py

@@ -50,7 +50,7 @@ def __init__(self, parent):
             self.parent = parent
             self.is_parallel_call = False
 
-        def bind(self, name: str, val: Optional[str]) -> None:
+        def bind(self, name: str, val: Optional[Any]) -> None:
             self.bindings[name] = val
             if getattr(val, "signature", None) is not None:
                 val.signature.set_function_name(name)
@@ -112,7 +112,7 @@ def validate(self, args: Optional[Any], context: Optional[Any]) -> Optional[Any]
     #
     class JFunction(JFunctionCallable, JFunctionSignatureValidation):
         function: 'Jsonata.JFunctionCallable'
-        signature: Optional[str]
+        signature: Optional[sig.Signature]
         function_name: Optional[str]
 
         def __init__(self, function, signature):

tests/generate.py

@@ -30,7 +30,8 @@ def main(args):
         for suite in list_suites:
 
             b = io.StringIO()
-            b.write("import pytest, sys\n")
+            b.write("import pytest\n")
+            b.write("import sys\n")
             b.write("from tests import jsonata_test\n\n\n")
             # Pascal case
             cname = ''.join(word.title() for word in suite.name.split('-'))