Problem with billing_agreement.cancel(). ('cancel() missing 1 required positional argument: 'attributes') - python-3.x

Question

SDK/Library version: 1.13.1
Environment: Sandbox
PayPal-Debug-ID values: None
Language, the language version, and OS: Python, Ubuntu
Issue description:
I'm getting the following error when I try to cancel a billing agreement.
The error:
TypeError: cancel() missing 1 required positional argument: 'attributes'
My code:
billing_agreement = BillingAgreement.find(billing_id)
if billing_agreement.cancel():
print(billing_agreement)
else:
flash('We are having some difficulties canceling your subscription, please try again later.', 'fails')
return redirect(url_for('settings.settingspage'))
I'm getting the error because I need something in the attribute's value but I don't know what should I assign to the variable.
GitHub issue: https://github.com/paypal/PayPal-Python-SDK/issues/297

Answer 1

After some digging and looking at the documentation samples I found a sample about the cancel option and what I needed to assign to the attribute value was a cancel_note.
The code:
cancel_note = {"note": "Canceling the agreement"}
user = Users.query.filter_by(id=ID).first()
billing_id = Subscriptions.query.filter_by(email=user.email).filter_by(active=1).first().order_id
billing_agreement = BillingAgreement.find(billing_id)
if billing_agreement.cancel(cancel_note):
flash('Subscription canceled with success.', 'success')
return redirect(url_for('settings.settingspage'))
else:
flash('We are having some difficulties canceling your subscription, please try again later.', 'fails')
return redirect(url_for('settings.settingspage'))
The documentation sample