config: Add ask_value() helper to section & config objects

mylib/config.py

@@ -249,12 +249,16 @@ class BaseOption:  # pylint: disable=too-many-instance-attributes
 
     def ask_value(self, set_it=True):
         """
-        Ask to user to enter value of this option and set or
-        return it regarding set parameter
+        Ask to user to enter value of this option and set it if set_it parameter is True
+
+        :param set_it: If True (default), option value will be updated with user input
+
+        :return: The configuration option value.
+        :rtype: mixed
         """
         value = self._ask_value()
         if set_it:
-            return self.set(value)
+            self.set(value)
         return value
 
 
@@ -510,8 +514,12 @@ class PasswordOption(StringOption):
 
     def ask_value(self, set_it=True):
         """
-        Ask to user to enter value of this option and set or
-        return it regarding set parameter
+        Ask to user to enter value of this option and set it if set_it parameter is True
+
+        :param set_it: If True (default), option value will be updated with user input
+
+        :return: The configuration option value.
+        :rtype: mixed
         """
         value = self._ask_value()
         if set_it:
@@ -530,7 +538,7 @@ class PasswordOption(StringOption):
                     use_keyring = False
                 else:
                     print("Invalid answer. Possible values: Y or N (case insensitive)")
-            return self.set(value, use_keyring=use_keyring)
+            self.set(value, use_keyring=use_keyring)
         return value
 
 
@@ -610,28 +618,32 @@ class ConfigSection:
 
         :param set_it: If True (default), option value will be updated with user input
 
-        :return: If set_it is True, return True if valid value for each configuration
-        option have been retrieved and set. If False, return a dict of configuration
-        options and their value.
+        :return: a dict of configuration options and their value.
         :rtype: bool of dict
         """
         if self.comment:
             print(f"# {self.comment}")
         print(f"[{self.name}]\n")
         result = {}
-        error = False
         for name, option in self.options.items():
-            option_result = option.ask_value(set_it=set_it)
-            if set_it:
-                result[name] = option_result
-            elif not option_result:
-                error = True
+            result[name] = option.ask_value(set_it=set_it)
             print()
         print()
-        if set_it:
-            return not error
         return result
 
+    def ask_value(self, option, set_it=True):
+        """
+        Ask user to enter value for the specified configuration option of the section
+
+        :param options: The configuration option name
+        :param set_it: If True (default), option value will be updated with user input
+
+        :return: The configuration option value.
+        :rtype: mixed
+        """
+        assert self.defined(option), f"Option {option} unknown"
+        return self.options[option].ask_value(set_it=set_it)
+
 
 class RawWrappedTextHelpFormatter(argparse.RawDescriptionHelpFormatter):
     """
@@ -1073,8 +1085,7 @@ class Config:  # pylint: disable=too-many-instance-attributes
             self._loaded()
 
         if self.get_option("mylib_config_reconfigure", default=False):
-            if self.ask_values(set_it=True) and self.save():
-                sys.exit(0)
+            self.ask_values(set_it=True)
             sys.exit(1)
 
         return options
@@ -1100,27 +1111,32 @@ class Config:  # pylint: disable=too-many-instance-attributes
         :param execute_callback: Sections's loaded callbacks will be finally executed
                                  (only if set_it is True, default: False)
 
-        :return: If set_it is True, return True if valid value for each configuration
-        option have been retrieved and set. If False, return a dict of configuration
-        section and their options value.
-        :rtype: bool of dict
+        :return: a dict of configuration section and their options value.
+        :rtype: dict
         """
         result = {}
-        error = False
         for name, section in self.sections.items():
-            section_result = section.ask_values(set_it=set_it)
-            if not set_it:
-                result[name] = section_result
-            elif not section_result:
-                error = True
-        if set_it:
-            if error:
-                return False
-            if execute_callback:
+            result[name] = section.ask_values(set_it=set_it)
+
+        if set_it and execute_callback:
             self._loaded()
-            return True
+
         return result
 
+    def ask_value(self, section, option, set_it=True):
+        """
+        Ask user to enter value for the specified configuration option
+
+        :param section: The configuration section name
+        :param option: The configuration option name
+        :param set_it: If True (default), option value will be updated with user input
+
+        :return: The configuration option value.
+        :rtype: mixed
+        """
+        assert self.defined(section, option), f"Unknown option {section}.{option}"
+        return self.sections[section].ask_value(option, set_it=set_it)
+
     def configure(self, argv=None, description=False):
         """
         Entry point of a script you could use to created your configuration file