Global decimal rounding options in Django

Question

Decimal numbers are by default rounded very unexpectedly, in order to make it work normally, it is needed to use ROUND_HALF_UP option.

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Answer 1

Worked in 1.9.5 (based on comment from @ark):

In myapp/apps.py

from __future__ import unicode_literals
import decimal
from django.apps import AppConfig


class MyAppConfig(AppConfig):

    name = 'myapp'

    def ready(self):
        # Set precision
        decimal.getcontext().prec = 9
        decimal.getcontext().rounding = decimal.ROUND_HALF_DOWN

In settings.py

INSTALLED_APPS = list(INSTALLED_APPS)
INSTALLED_APPS.append('myapp.apps.MyAppConfig')