Added note to take method.

pandas/core/arrays/_mixins.py

@@ -174,6 +174,22 @@ def take(
  fill_value=fill_value,
  axis=axis,
  )
+ # One of the base classes to this class: ExtensionArray, provides
+ # the dtype property, but abstractly, so it leaves the implementation
+ # of dtype storage up to its derived classes. Some of these derived
+ # classes don't provide a setter method for their dtype property, so
+ # I can't set the dtype here and expect it to work for all classes that
+ # inherit this take method.
+
+ # How can I produce an extension array of the same type as self,
+ # having a floating-point dtype if self has an integer dtype or otherwise
+ # the same dtype as self?
+
+ # Constructing a new object of the same type as self doesn't always
+ # work since the constructors of some derived classes of this class
+ # don't accept a dtype parameter, which I need to pass to set the
+ # result's dtype to a floating-point type.
+
  if self.dtype in [
  NumpyEADtype(np.uint8),
  NumpyEADtype(np.uint16),