[Solved]-Django "python manage.py validate" error : unknown command 'validate'

I think python manage.py validate is deprecated since 1.7, you can use python manage.py check

https://docs.djangoproject.com/en/1.7/ref/django-admin/#validate

With python manage.py these commands are listed:

Available subcommands:

[auth]

changepassword

createsuperuser

[django]

check

compilemessages

createcachetable

dbshell

diffsettings

dumpdata

flush

inspectdb

loaddata

makemessages

makemigrations

migrate

sendtestemail

shell

showmigrations

sqlflush

sqlmigrate

sqlsequencereset

squashmigrations

startapp

startproject

test

testserver

[sessions]

clearsessions

[staticfiles]

collectstatic

findstatic

runserver

There is no “validate” command in the list.

With this command:

pip install Django==1.8.2

the problem will be solved.
Django==1.9.2 does not support some commands.