Add is_dynamic property

Author: kclowes

web3/_utils/abi.py

@@ -161,6 +161,10 @@ class AcceptsHexStrMixin(encoding.BaseEncoder):
     def __init__(self, subencoder):
         self.subencoder = subencoder
 
+    @property
+    def is_dynamic(self):
+        return self.subencoder.is_dynamic
+
     @classmethod
     def from_type_str(cls, abi_type, registry):
         subencoder_cls = cls.get_subencoder_class()
@@ -183,8 +187,7 @@ def encode(self, value):
         return self.subencoder.encode(normalized_value)
 
     def validate_and_normalize(self, value):
-        # call this raw value
-        original_value = value
+        raw_value = value
         if is_text(value):
             try:
                 value = decode_hex(value)
@@ -194,13 +197,13 @@ def validate_and_normalize(self, value):
                     msg=f'{value} is an invalid hex string',
                 )
             else:
-                if original_value[:2] != '0x':
+                if raw_value[:2] != '0x':
                     if self.is_strict:
                         self.invalidate_value(
-                            original_value,
+                            raw_value,
                             msg='hex string must be prefixed with 0x'
                         )
-                    elif original_value[:2] != '0x':
+                    elif raw_value[:2] != '0x':
                         warnings.warn(
                             'in v6 it will be invalid to pass a hex string without the "0x" prefix',
                             category=DeprecationWarning