<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def reverse(self):
 """ Reverses the main dataframe order :example: ``ds.reverse()`` """

        try:
            self.df = self.df.iloc[::-1]
        except Exception as e:
            self.err(e, "Can not reverse the dataframe")