move answer submodule to exercise submodule

* AnswerRegistry -> ExerciseRegistry
* AnswerWidget -> ExerciseWidget
* answer_key -> exercise_key
* answer_registry -> exercise_registry

src/scwidgets/exercise/__init__.py

@@ -1,4 +1,5 @@
 from ._widget_code_exercise import CodeExercise
+from ._widget_exercise_registry import ExerciseRegistry, ExerciseWidget
 from ._widget_text_exercise import TextExercise
 
-__all__ = ["CodeExercise", "TextExercise"]
+__all__ = ["CodeExercise", "TextExercise", "ExerciseWidget", "ExerciseRegistry"]

src/scwidgets/exercise/_widget_code_exercise.py

@@ -11,7 +11,6 @@
 from widget_code_input.utils import CodeValidationError
 
 from .._utils import Formatter
-from ..answer import AnswerRegistry, AnswerWidget
 from ..check import Check, CheckableWidget, CheckRegistry, ChecksResult
 from ..code._widget_code_input import CodeInput
 from ..code._widget_parameter_panel import ParameterPanel
@@ -24,9 +23,10 @@
     UpdateCueBox,
     UpdateResetCueButton,
 )
+from ._widget_exercise_registry import ExerciseRegistry, ExerciseWidget
 
 
-class CodeExercise(VBox, CheckableWidget, AnswerWidget):
+class CodeExercise(VBox, CheckableWidget, ExerciseWidget):
     """
     A widget to demonstrate code interactively in a variety of ways. It is a combination
     of the several widgets that allow to check check, run and visualize code.
@@ -59,8 +59,8 @@ def __init__(
         self,
         code: Union[None, WidgetCodeInput, types.FunctionType] = None,
         check_registry: Optional[CheckRegistry] = None,
-        answer_registry: Optional[AnswerRegistry] = None,
-        answer_key: Optional[str] = None,
+        exercise_registry: Optional[ExerciseRegistry] = None,
+        exercise_key: Optional[str] = None,
         parameters: Optional[
             Union[Dict[str, Union[Check.FunInParamT, Widget]], ParameterPanel]
         ] = None,
@@ -90,12 +90,12 @@ def __init__(
         else:
             self._exercise_description_html = HTMLMath(self._exercise_description)
         if exercise_title is None:
-            if answer_key is None:
+            if exercise_key is None:
                 self._exercise_title = None
                 self._exercise_title_html = None
             else:
-                self._exercise_title = answer_key
-                self._exercise_title_html = HTML(f"<b>{answer_key}</b>")
+                self._exercise_title = exercise_key
+                self._exercise_title_html = HTML(f"<b>{exercise_key}</b>")
         else:
             self._exercise_title = exercise_title
             self._exercise_title_html = HTML(f"<b>{exercise_title}</b>")
@@ -148,8 +148,8 @@ def __init__(
         elif not (isinstance(cue_outputs, list)):
             cue_outputs = [cue_outputs]
 
-        CheckableWidget.__init__(self, check_registry, answer_key)
-        AnswerWidget.__init__(self, answer_registry, answer_key)
+        CheckableWidget.__init__(self, check_registry, exercise_key)
+        ExerciseWidget.__init__(self, exercise_registry, exercise_key)
 
         self._code = code
         self._output = CueOutput()
@@ -320,7 +320,7 @@ def __init__(
                 button_tooltip=button_tooltip,
             )
 
-        if self._answer_registry is None or (
+        if self._exercise_registry is None or (
             self._code is None and self._parameter_panel is None
         ):
             self._save_button = None

src/scwidgets/answer/_widget_answer_registry.py → src/scwidgets/exercise/_widget_exercise_registry.py

@@ -14,16 +14,16 @@
 from .._utils import Formatter
 
 
-class AnswerWidget:
+class ExerciseWidget:
     """
     Any widget inheriting from this class can be (de)serialized
     :py:class:`WidgetStateRegistry`. The serialization offered by ipywidgets
     cannot be loaded out-of-the-box for restarted notebook since the widget IDs change
 
-    :param answer_registry:
-        the answer registry that registers the answers for this widget
+    :param exercise_registry:
+        the exercise registry that registers the answers for this widget
 
-    :param answer_key:
+    :param exercise_key:
         Identifier for the widget, must be unique for each regestired widget
 
     Reference
@@ -34,19 +34,23 @@ class AnswerWidget:
 
     def __init__(
         self,
-        answer_registry: Union[None, AnswerRegistry],
-        answer_key: Union[None, Hashable],
+        exercise_registry: Union[None, ExerciseRegistry],
+        exercise_key: Union[None, Hashable],
     ):
-        if answer_registry is not None and answer_key is None:
-            raise ValueError("answer registry was given but no answer key was given")
-        elif answer_registry is None and answer_key is not None:
-            raise ValueError("answer key was given but no answer registry was given")
+        if exercise_registry is not None and exercise_key is None:
+            raise ValueError(
+                "exercise registry was given but no exercise key was given"
+            )
+        elif exercise_registry is None and exercise_key is not None:
+            raise ValueError(
+                "exercise key was given but no exercise registry was given"
+            )
         # we need to use a key because self is not persistent on kernel restarts
-        self._answer_registry = answer_registry
-        self._answer_key = answer_key
+        self._exercise_registry = exercise_registry
+        self._exercise_key = exercise_key
 
-        if self._answer_registry is not None and answer_key is not None:
-            self._answer_registry.register_widget(self, self._answer_key)
+        if self._exercise_registry is not None and exercise_key is not None:
+            self._exercise_registry.register_widget(self, self._exercise_key)
 
     @property
     def answer(self) -> dict:
@@ -77,34 +81,34 @@ def handle_load_result(self, result: Union[str, Exception]) -> None:
         raise NotImplementedError("handle_load_result has not been implemented")
 
     def save(self) -> Union[str, Exception]:
-        if self._answer_registry is None:
+        if self._exercise_registry is None:
             raise ValueError(
-                "No answer registry given on initialization, save cannot be used"
+                "No exercise registry given on initialization, save cannot be used"
             )
-        if self._answer_key is None:
+        if self._exercise_key is None:
             raise ValueError(
-                "No answer key given on initialization, save cannot be used"
+                "No exercise key given on initialization, save cannot be used"
             )
-        return self._answer_registry.save_answer(self._answer_key)
+        return self._exercise_registry.save_answer(self._exercise_key)
 
     def load(self) -> Union[str, Exception]:
-        if self._answer_registry is None:
+        if self._exercise_registry is None:
             raise ValueError(
-                "No answer registry given on initialization, load cannot be used"
+                "No exercise registry given on initialization, load cannot be used"
             )
-        if self._answer_key is None:
+        if self._exercise_key is None:
             raise ValueError(
-                "No answer key given on initialization, save cannot be used"
+                "No exercise key given on initialization, save cannot be used"
             )
-        return self._answer_registry.load_answer(self._answer_key)
+        return self._exercise_registry.load_answer(self._exercise_key)
 
     @property
-    def answer_registry(self):
-        return self._answer_registry
+    def exercise_registry(self):
+        return self._exercise_registry
 
     @property
-    def answer_key(self):
-        return self._answer_key
+    def exercise_key(self):
+        return self._exercise_key
 
 
 class FilenameParser:
@@ -152,7 +156,7 @@ def verify_valid_student_name(student_name: str):
             )
 
 
-class AnswerRegistry(VBox):
+class ExerciseRegistry(VBox):
     """ """
 
     def __init__(self, filename_prefix: Optional[str] = None, *args, **kwargs):
@@ -268,15 +272,15 @@ def registered_widgets(self):
     def loaded_file_name(self):
         return self._loaded_file_name
 
-    def register_widget(self, widget: AnswerWidget, answer_key: Hashable):
+    def register_widget(self, widget: ExerciseWidget, exercise_key: Hashable):
         """
         :param widget:
             widget answer is save on click of save button
-        :param answer_key:
-            unique answer key for widget to store, so it can be reloaded persistently
+        :param exercise_key:
+            unique exercise key for widget to store, so it can be reloaded persistently
             after a restart of the python kernel
         """
-        self._widgets[answer_key] = widget
+        self._widgets[exercise_key] = widget
 
     def create_new_file(self) -> str:
         FilenameParser.verify_valid_student_name(self._student_name_text.value)
@@ -314,17 +318,17 @@ def create_new_file(self) -> str:
             self._loaded_file_name = answers_filename
             return f"File {answers_filename!r} created and loaded."
 
-    def load_answer(self, answer_key: Hashable) -> str:
+    def load_answer(self, exercise_key: Hashable) -> str:
         """
         Only works when file has been loaded
 
-        :param answer_key:
-            unique answer key for widget to store, so it can be reloaded persistently
+        :param exercise_key:
+            unique exercise key for widget to store, so it can be reloaded persistently
             after a restart of the python kernel
         """
-        if answer_key not in self._widgets.keys():
+        if exercise_key not in self._widgets.keys():
             raise KeyError(
-                f"There is no widget registered with answer key {answer_key!r}."
+                f"There is no widget registered with exercise key {exercise_key!r}."
             )
         if self._loaded_file_name is None:
             raise ValueError("No file has been selected in the dropdown list.")
@@ -340,14 +344,15 @@ def load_answer(self, answer_key: Hashable) -> str:
         answers_filename = self._answers_files_dropdown.value
         with open(answers_filename, "r") as answers_file:
             answers = json.load(answers_file)
-        if answer_key not in answers.keys():
+        if exercise_key not in answers.keys():
             raise KeyError(
-                f"Your file does not contain the answer with answer key {answer_key!r}."
+                "Your file does not contain the answer with exercise key "
+                f"{exercise_key!r}."
             )
         else:
-            self._widgets[answer_key].answer = answers[answer_key]
+            self._widgets[exercise_key].answer = answers[exercise_key]
         self._loaded_file_name = answers_filename
-        return f"Answer has been loaded from file {answers_filename!r}."
+        return f"Exercise has been loaded from file {answers_filename!r}."
 
     def load_file(self) -> str:
         """
@@ -376,26 +381,26 @@ def load_file(self) -> str:
 
         with open(answers_filename, "r") as answers_file:
             answers = json.load(answers_file)
-        for answer_key, answer in answers.items():
-            if answer_key not in self._widgets.keys():
+        for exercise_key, answer in answers.items():
+            if exercise_key not in self._widgets.keys():
                 raise ValueError(
-                    f"Your file contains an answer with key {answer_key!r} "
+                    f"Your file contains an answer with key {exercise_key!r} "
                     f"with no corresponding registered widget."
                 )
             else:
-                self._widgets[answer_key].answer = answer
+                self._widgets[exercise_key].answer = answer
         self._loaded_file_name = answers_filename
 
         # only notifiy all widgets when result was successful
         for widget in self._widgets.values():
-            result = f"Answer has been loaded from file {self._loaded_file_name!r}."
+            result = f"Exercise has been loaded from file {self._loaded_file_name!r}."
             widget.handle_load_result(result)
         return f"All answers loaded from file {answers_filename!r}."
 
-    def save_answer(self, answer_key: Hashable) -> str:
-        if not (answer_key in self._widgets.keys()):
+    def save_answer(self, exercise_key: Hashable) -> str:
+        if not (exercise_key in self._widgets.keys()):
             raise KeyError(
-                f"There is no widget registered with answer key {answer_key!r}."
+                f"There is no widget registered with exercise key {exercise_key!r}."
             )
 
         if self._loaded_file_name is None:
@@ -411,11 +416,11 @@ def save_answer(self, answer_key: Hashable) -> str:
         else:
             with open(self._loaded_file_name, "r") as answers_file:
                 answers = json.load(answers_file)
-            answers[answer_key] = self._widgets[answer_key].answer
+            answers[exercise_key] = self._widgets[exercise_key].answer
 
             with open(self._loaded_file_name, "w") as answers_file:
                 json.dump(answers, answers_file)
-            result = f"Answer has been saved in file {self._loaded_file_name!r}."
+            result = f"Exercise has been saved in file {self._loaded_file_name!r}."
         return result
 
     def save_all_answers(self) -> str:
@@ -434,15 +439,15 @@ def save_all_answers(self) -> str:
         else:
             with open(self._loaded_file_name, "r") as answers_file:
                 answers = json.load(answers_file)
-            for answer_key, widget in self._widgets.items():
-                answers[answer_key] = widget.answer
+            for exercise_key, widget in self._widgets.items():
+                answers[exercise_key] = widget.answer
 
             with open(self._loaded_file_name, "w") as answers_file:
                 json.dump(answers, answers_file)
 
             # only notifiy all widgets when result was successful
             for widget in self._widgets.values():
-                result = f"Answer has been saved in file {self._loaded_file_name!r}."
+                result = f"Exercise has been saved in file {self._loaded_file_name!r}."
                 widget.handle_save_result(result)
 
             return f"All answers were saved in file {self._loaded_file_name!r}."

src/scwidgets/exercise/_widget_text_exercise.py

@@ -3,11 +3,11 @@
 from ipywidgets import HTML, HBox, HTMLMath, Layout, Output, Textarea, VBox
 
 from .._utils import Formatter
-from ..answer import AnswerRegistry, AnswerWidget
 from ..cue import SaveCueBox, SaveResetCueButton
+from ._widget_exercise_registry import ExerciseRegistry, ExerciseWidget
 
 
-class TextExercise(VBox, AnswerWidget):
+class TextExercise(VBox, ExerciseWidget):
     """
     :param textarea:
         a custom textarea with custom styling, if not specified the standard parameters
@@ -19,8 +19,8 @@ class TextExercise(VBox, AnswerWidget):
     def __init__(
         self,
         value: Optional[str] = None,
-        answer_key: Optional[str] = None,
-        answer_registry: Optional[AnswerRegistry] = None,
+        exercise_key: Optional[str] = None,
+        exercise_registry: Optional[ExerciseRegistry] = None,
         exercise_description: Optional[str] = None,
         exercise_title: Optional[str] = None,
         *args,
@@ -32,12 +32,12 @@ def __init__(
         else:
             self._exercise_description_html = HTMLMath(self._exercise_description)
         if exercise_title is None:
-            if answer_key is None:
+            if exercise_key is None:
                 self._exercise_title = None
                 self._exercise_title_html = None
             else:
-                self._exercise_title = answer_key
-                self._exercise_title_html = HTML(f"<b>{answer_key}</b>")
+                self._exercise_title = exercise_key
+                self._exercise_title_html = HTML(f"<b>{exercise_key}</b>")
         else:
             self._exercise_title = exercise_title
             self._exercise_title_html = HTML(f"<b>{exercise_title}</b>")
@@ -52,7 +52,7 @@ def __init__(
         self._cue_textarea = self._textarea
         self._output = Output()
 
-        if answer_registry is None:
+        if exercise_registry is None:
             self._save_button = None
             self._load_button = None
             self._button_panel = None
@@ -97,7 +97,7 @@ def __init__(
                 layout=Layout(justify_content="flex-end"),
             )
 
-        AnswerWidget.__init__(self, answer_registry, answer_key)
+        ExerciseWidget.__init__(self, exercise_registry, exercise_key)
 
         widget_children = []
         if self._exercise_title_html is not None: