Fixed where query typing

src/cpl_query/extension/__init__.py

@@ -15,7 +15,7 @@ __title__ = 'cpl_query.extension'
 __author__ = 'Sven Heidemann'
 __license__ = 'MIT'
 __copyright__ = 'Copyright (c) 2020 - 2021 sh-edraft.de'
-__version__ = '2021.11.0.post2'
+__version__ = '2021.11.0.post3'
 
 from collections import namedtuple
 
@@ -27,4 +27,4 @@ from .ordered_iterable_abc import OrderedIterableABC
 from .ordered_iterable import OrderedIterable
 
 VersionInfo = namedtuple('VersionInfo', 'major minor micro')
-version_info = VersionInfo(major='2021', minor='11', micro='0.post2')
+version_info = VersionInfo(major='2021', minor='11', micro='0.post3')

src/cpl_query/extension/iterable.py

@@ -43,7 +43,7 @@ class Iterable(IterableABC):
     def count(self, func: Callable = None) -> int:
         return count_query(self, func)
 
-    def distinct(self, func: Callable) -> IterableABC:
+    def distinct(self, func: Callable = None) -> IterableABC:
         return self.__to_self(distinct_query(self, func))
 
     def element_at(self, index: int) -> any:

src/cpl_query/extension/iterable_abc.py

@@ -60,9 +60,8 @@ class IterableABC(ABC, list):
             __object: :class:`object`
                 value
         """
-        if self._type is not None and type(__object) != self._type and not isinstance(type(__object), self._type) \
-                and not issubclass(type(__object), self._type):
-            raise Exception(f'Unexpected type: {type(__object)}')
+        if self._type is not None and type(__object) != self._type and not isinstance(type(__object), self._type) and not issubclass(type(__object), self._type):
+            raise Exception(f'Unexpected type: {type(__object)}\nExpected type: {self._type}')
 
         if len(self) == 0 and self._type is None:
             self._type = type(__object)