please help me below query working fine it gives monthly group with amount but I need group by day  not monthly in odoo11. how to build i query group by day with amount

this query under reports.py file with in models.AbstractModel

self.env['account.invoice'].read_group([],['date_invoice','amount_total'],['date_invoice']) 

for group in groups:
    print(group['date_invoice'],group['amount_total'])

November 2016      xyz amount
December 2016      4525.52
January 2017          4525.23
February 2017         122.78
March 2017              10159.24