human
Solve the following python programming problem given the following code:
def bind_processor(self, dialect) : 
    datetime_date = datetime.date 
    format = dialect._storage_format 
    def process(value) : 
        if (value is None) : 
            return None 
else : 
            if isinstance (value, datetime_date) : 
                return (format % { 
                    'year' : value.year, 
                    'month' : value.month, 
                    'day' : value.day, 
}) 
else : 
                raise TypeError ('SQLite Date type only accepts Python date objects as input.') 
return process 

    
    

    Fix the buggy line: format = dialect._storage_format
assistant
#Here is Python code to fix the buggy line: format = dialect.

format = self._storage_format