#509

Add providers log on error.

src/dependency_injector/providers.pyx

@@ -204,7 +204,11 @@ cdef class Provider(object):
         if self.__last_overriding is not None:
             result = self.__last_overriding(*args, **kwargs)
         else:
+            try:
                 result = self._provide(args, kwargs)
+            except Exception as exc:
+                print(self)
+                raise exc
 
         if self.is_async_mode_disabled():
             return result