Config: add set_default() / set_defaults() methods

mylib/config.py

@@ -116,6 +116,10 @@ class BaseOption:  # pylint: disable=too-many-instance-attributes
 
         self._set = True
 
+    def set_default(self, default_value):
+        """Set option default value"""
+        self.default = default_value
+
     @property
     def parser_action(self):
         """Get action as accept by argparse.ArgumentParser"""
@@ -511,6 +515,16 @@ class ConfigSection:
         assert self.defined(option), f"Option {option} unknown"
         return self.options[option].set(value)
 
+    def set_default(self, option, default_value):
+        """Set default option value"""
+        assert self.defined(option), f"Option {option} unknown"
+        return self.options[option].set_default(default_value)
+
+    def set_defaults(self, **default_values):
+        """Set default options value"""
+        for option, default_value in default_values.items():
+            self.set_default(option, default_value)
+
     def add_options_to_parser(self, parser):
         """Add section to argparse.ArgumentParser"""
         assert isinstance(parser, argparse.ArgumentParser)
@@ -660,6 +674,18 @@ class Config:  # pylint: disable=too-many-instance-attributes
         self._init_config_parser()
         self.sections[section].set(option, value)
 
+    def set_default(self, section, option, default_value):
+        """Set default option value"""
+        assert self.defined(section, option), f"Unknown option {section}.{option}"
+        self._init_config_parser()
+        self.sections[section].set_default(option, default_value)
+
+    def set_defaults(self, section, **default_values):
+        """Set default options value"""
+        assert section in self.sections, f"Unknown section {section}"
+        self._init_config_parser()
+        self.sections[section].set_defaults(**default_values)
+
     def _init_config_parser(self, force=False):
         """Initialize ConfigParser object"""
         if not self.config_parser or force: