aml = self.env['account.move.line'].search([])             

for record in aml:

if record.payment_id == self.id

self.env['account.move.line'].create({'number_id':self.number_id}) 

 I have piece of code. I want get payment_id from account_move_line but when i print it. it will account.payment(21,)
I can't compare with any other id. Help me, please. Thanks