Added python_type implementation to arrow, email, ipaddress, password, and url types

sqlalchemy_utils/types/arrow.py

@@ -85,3 +85,7 @@ class ArrowType(types.TypeDecorator, ScalarCoercible):
         elif isinstance(value, datetime):
             value = arrow.get(value)
         return value
+
+    @property
+    def python_type(self):
+        return self.impl.type.python_type

sqlalchemy_utils/types/email.py

@@ -11,3 +11,7 @@ class EmailType(sa.types.TypeDecorator):
         if value is not None:
             return value.lower()
         return value
+
+    @property
+    def python_type(self):
+        return self.impl.type.python_type

sqlalchemy_utils/types/ip_address.py

@@ -67,3 +67,7 @@ class IPAddressType(types.TypeDecorator, ScalarCoercible):
 
     def _coerce(self, value):
         return ip_address(value) if value else None
+
+    @property
+    def python_type(self):
+        return self.impl.type.python_type

sqlalchemy_utils/types/password.py

@@ -208,5 +208,9 @@ class PasswordType(types.TypeDecorator, ScalarCoercible):
 
         return value
 
+    @property
+    def python_type(self):
+        return self.impl.type.python_type
+
 
 Password.associate_with(PasswordType)

sqlalchemy_utils/types/url.py

@@ -61,3 +61,7 @@ class URLType(types.TypeDecorator, ScalarCoercible):
         if value is not None and not isinstance(value, furl):
             return furl(value)
         return value
+
+    @property
+    def python_type(self):
+        return self.impl.type.python_type