Hook for Python Instagram private API for avoid re-login

auth.py

import json
import codecs
import os.path
try:
	from instagram_private_api import (
		Client, ClientError, ClientLoginError,
		ClientCookieExpiredError, ClientLoginRequiredError,
		__version__ as client_version)
except ImportError:
	import sys
	sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
	from instagram_private_api import (
		Client, ClientError, ClientLoginError,
		ClientCookieExpiredError, ClientLoginRequiredError,
		__version__ as client_version)


def to_json(python_object):
	if isinstance(python_object, bytes):
		return {'__class__': 'bytes',
				'__value__': codecs.encode(python_object, 'base64').decode()}
	raise TypeError(repr(python_object) + ' is not JSON serializable')


def from_json(json_object):
	if '__class__' in json_object and json_object['__class__'] == 'bytes':
		return codecs.decode(json_object['__value__'].encode(), 'base64')
	return json_object


def onlogin_callback(api, new_settings_file):
	cache_settings = api.settings
	with open(new_settings_file, 'w') as outfile:
		json.dump(cache_settings, outfile, default=to_json)
		print('SAVED: {0!s}'.format(new_settings_file))


def login_instagram(username, password):

	print('Client version: {0!s}'.format(client_version))
	print("Login {} with {}".format(username, password))

	device_id = None
	try:

		settings_file = 'credentials.json'
		if not os.path.isfile(settings_file):
			# settings file does not exist
			print('Unable to find file: {0!s}'.format(settings_file))

			# login new
			api = Client(
				username, password,
				on_login=lambda x: onlogin_callback(x, settings_file))
		else:
			with open(settings_file) as file_data:
				cached_settings = json.load(file_data, object_hook=from_json)
			print('Reusing settings: {0!s}'.format(settings_file))

			device_id = cached_settings.get('device_id')
			# reuse auth settings
			api = Client(
				username, password,
				settings=cached_settings)

	except (ClientCookieExpiredError, ClientLoginRequiredError) as e:
		print('ClientCookieExpiredError/ClientLoginRequiredError: {0!s}'.format(e))

		# Login expired
		# Do relogin but use default ua, keys and such
		api = Client(
			username, password,
			device_id=device_id,
			on_login=lambda x: onlogin_callback(x, settings_file))

	except ClientLoginError as e:
		print('ClientLoginError {0!s}'.format(e))
		exit(9)
	except ClientError as e:
		print('ClientError {0!s} (Code: {1:d}, Response: {2!s})'.format(e.msg, e.code, e.error_response))
		exit(9)
	except Exception as e:
		print('Unexpected Exception: {0!s}'.format(e))
		exit(99)

	return api

views.py

import auth
from instagram_private_api import Client, ClientCompatPatch


def do_something():
	instagram_app_api = auth.login_instagram("username", "password")
  # Do stuff with instagram_app_api

do_something()