qteasy/database.py
def lowest_freq(self):
        """ return the lowest frequency of data

        :return:
        """
        return None
 return the lowest frequency of data

        :return:
        
return the lowest frequency of data
return the lowest frequency of data
def lowest_freq(self):
        return None
def lowest_freq ( self ) : return None
return the lowest frequency of data
return the lowest frequency of data
""" return the lowest frequency of data

        :return:
        """
None
self