code: def get_functions_reading_from_variable(self, variable):
          '''
              Return the functions reading the variable
          '''
          return [f for f in self.functions if f.is_reading(variable)f get_functions_reading_from_variable(self, variable):
          '''
              Return the functions reading the variable
          '''
          return [f for f in self.functions if f.is_reading(variable)]
docs: Return the functions reading the variable