<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _setsetting(setting, default):
 """Dynamically sets the variable named in `setting` This method uses `_getsetting()` to either fetch the setting from Django's settings module, or else fallback to the default value; it then sets a variable in this module with the returned value. """

    value = _getsetting(setting, default)
    setattr(_self, setting, value)