Shippo - Python Package Async Issue - shippo

Question

I have imported the Shippo python package and I am trying to get their sample to work but I am running into the following error message (see below). I am running Python 3.7.2 on the most current API version.
Here is the error -
Traceback (most recent call last):
File "c:/Users/tom/Documents/PyProjects/goShippo/goShippoCreateLabels.py", line 1, in <module>
import shippo
File "C:\Python\lib\site-packages\shippo\__init__.py", line 8, in <module>
from shippo.resource import (
File "C:\Python\lib\site-packages\shippo\resource.py", line 303
def get_rates(cls, object_id, async=False, api_key=None, currency=None, **params):
^
SyntaxError: invalid syntax
Here is the code -
import shippo
shippo.api_key = "shippo_test_123456789"
address_from = {
"name": "Shawn Ippotle",
"company": "Shippo",
"street1": "215 Clayton St.",
"city": "San Francisco",
"state": "CA",
"zip": "94117",
"country": "US",
"phone": "[phone]",
"email": "shippotle#goshippo.com"
}
address_to = {
"name": "Mr Hippo",
"company": "",
"street1": "Broadway 1",
"street2": "",
"city": "New York",
"state": "NY",
"zip": "10007",
"country": "US",
"phone": "[phone]",
"email": "mrhippo#goshippo.com",
"metadata": "Hippos dont lie"
}
parcel = {
"length": "5",
"width": "5",
"height": "5",
"distance_unit": "in",
"weight": "2",
"mass_unit": "lb"
}
shipment = {
"address_from": address_from,
"address_to": address_to,
"parcels": [parcel]
}
transaction = shippo.Transaction.create(
shipment = shipment,
carrier_account = "b741b99f95e841639b54272834bc478c",
servicelevel_token = "usps_priority"
)

Answer 1

This package has Python version coverage up to 3.3. In versions 3.6+, "async" became a reserved keyword causing the syntax error you're getting.
Since "async" is a default parameter, the best workaround would be to explicitly change the "async" parameter to "asynchronous". This should at least avoid the syntax error until the package is updated for 3.6+ support.