NameError: argments is not defined

[azzedineA]

I want to join between two files,but I get Error error : NameError: name 'names' is not defined

!python job.py data.txt --database item.txt

from mrjob.job import MRJob
from mrjob.step import MRStep
class MRPeopleScores(MRJob):
     def steps(self):
            return [
             MRStep(mapper=self.mapper_1,reducer_init=self.reducer_init, reducer=self.reducer_1)
         ]
   
    def configure_args(self):
        super(MRPeopleScores, self).configure_args()
        self.add_file_arg('--database')

    def mapper(self, _, line):
        (employee_id, age,var_,salary) = line.split("\t")
        yield int(employee_id), salary
        
    def reducer_init(self):
        
        with open("item.txt") as f:
            for line in f:
                fields = line.split('|')
                self.names[fields[0]] = fields[1] 

    def reducer(self,employee_id, salary):
        
        for salary_ in salary:
              yield employee_id,(salary_,names[employee_id])
   

if __name__ == '__main__':
    MRPeopleScores.run()

[manursanchez]

Hello:
I think that you should declare self.names=[] under reducer_init, and to add "self.names..." in the last yield.
Best.