Including `bigcommerce` python package throws this error for Hawthorn release

Development
1

I’m running into this error when installed this additional python package that appears to run Python 3 on a Hawthorn instance of Open edX that’s running Python 2. Has anyone been able to get Python 3 packages working on Python 2 for the platform. It appears to work fine in the Juniper release or newer since that uses Python 3.

Installing this package bigcommerce · PyPI

SyntaxError: invalid syntax
Traceback (most recent call last):
File "/edx/app/edxapp/edx-platform/manage.py", line 118, in <module>
startup.run()
File "/edx/app/edxapp/edx-platform/lms/startup.py", line 19, in run
django.setup()
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/__init__.py", line 27, in setup
apps.populate(settings.INSTALLED_APPS)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/apps/registry.py", line 85, in populate
app_config = AppConfig.create(entry)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/apps/config.py", line 94, in create
module = import_module(entry)
File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/bigcommerce/__init__.py", line 3, in <module>
from bigcommerce.customer_login_token import CustomerLoginTokens as customer_login_token
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/bigcommerce/customer_login_token.py", line 9
def create(cls, client, customer_id: int, redirect_url=None, request_ip=None, iat_time=None, channel_id: int = 1):
^
SyntaxError: invalid syntax

Hawthorn

root@lms:/edx/app/edxapp/edx-platform# python --version
Python 2.7.12

Juniper

root@lms:/edx/app/edxapp/edx-platform# python --version
Python 3.5.2

cc: @Tim_McCormack

2

We’re rolling back to a version of the bigcommerce-api-python package that can work with Python 2. This seems to work so far with the syntax error that we were seeing above.

3

After further testing it appears that the method argument that included a type identifier argument: int = 1 specifying that it needs to be of int type was causing the issue. I’m guessing that this is Python 3 syntax. After changing this back to argument=1 without the type the unit test passed successfully.