Error when importing PublisherClient

[gariyanto]

Hi I followed the doc and got error when importing the PublisherClient.
from google.cloud.pubsublite.cloudpubsub import PublisherClient

Environment details

• OS type and version: MacOS BigSurr 11.2.3
• Python version: Python 3.6.7
• pip version: pip 21.1
• google-cloud-pubsublite version: Name: google-cloud-pubsublite Version: 0.4.0
• 'pip freeze':

cachetools==4.2.2
certifi==2020.12.5
chardet==4.0.0
google-api-core==1.26.3
google-auth==1.30.0
google-cloud-pubsub==2.4.1
google-cloud-pubsublite==0.4.0
googleapis-common-protos==1.53.0
grpc-google-iam-v1==0.12.3
grpcio==1.37.1
idna==2.10
libcst==0.3.18
mypy-extensions==0.4.3
overrides==5.0.1
packaging==20.9
proto-plus==1.18.1
protobuf==3.15.8
pyasn1==0.4.8
pyasn1-modules==0.2.8
pyparsing==2.4.7
pytz==2021.1
PyYAML==5.4.1
requests==2.25.1
rsa==4.7.2
six==1.15.0
typing-extensions==3.7.4.3
typing-inspect==0.6.0
typing-utils==0.0.3
urllib3==1.26.4

Steps to reproduce

I followed the doc in the https://googleapis.dev/python/pubsublite/latest/publisher/index.html

1. Install venv
2. pip install google-cloud-pubsublite

Code example

from google.cloud.pubsublite.cloudpubsub import PublisherClient

Stack trace

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/gunawan/.virtualenv/pb1/lib/python3.6/site-packages/google/cloud/pubsublite/cloudpubsub/__init__.py", line 18, in <module>
    from .publisher_client import AsyncPublisherClient, PublisherClient
  File "/Users/gunawan/.virtualenv/pb1/lib/python3.6/site-packages/google/cloud/pubsublite/cloudpubsub/publisher_client.py", line 29, in <module>
    from google.cloud.pubsublite.cloudpubsub.internal.multiplexed_publisher_client import (
  File "/Users/gunawan/.virtualenv/pb1/lib/python3.6/site-packages/google/cloud/pubsublite/cloudpubsub/internal/multiplexed_publisher_client.py", line 35, in <module>
    class MultiplexedPublisherClient(PublisherClientInterface):
  File "/Users/gunawan/.virtualenv/pb1/lib/python3.6/site-packages/google/cloud/pubsublite/cloudpubsub/internal/multiplexed_publisher_client.py", line 50, in MultiplexedPublisherClient
    ) -> "Future[str]":
  File "/Users/gunawan/.virtualenv/pb1/lib/python3.6/site-packages/overrides/overrides.py", line 67, in overrides
    return _overrides(method, check_signature, check_at_runtime)
  File "/Users/gunawan/.virtualenv/pb1/lib/python3.6/site-packages/overrides/overrides.py", line 93, in _overrides
    _validate_method(method, super_class, check_signature)
  File "/Users/gunawan/.virtualenv/pb1/lib/python3.6/site-packages/overrides/overrides.py", line 114, in _validate_method
    ensure_signature_is_compatible(super_method, method, is_static)
  File "/Users/gunawan/.virtualenv/pb1/lib/python3.6/site-packages/overrides/signature.py", line 75, in ensure_signature_is_compatible
    super_type_hints = _get_type_hints(super_callable)
  File "/Users/gunawan/.virtualenv/pb1/lib/python3.6/site-packages/overrides/signature.py", line 46, in _get_type_hints
    return get_type_hints(callable)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/typing.py", line 1543, in get_type_hints
    value = _eval_type(value, globalns, localns)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/typing.py", line 350, in _eval_type
    return t._eval_type(globalns, localns)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/typing.py", line 245, in _eval_type
    eval(self.__forward_code__, globalns, localns),
  File "<string>", line 1, in <module>
TypeError: 'type' object is not subscriptable

[MelchiSalins]

Even I am facing the a similar issue with python 3. Tried downgrading to version 0.3.0 of the pubsublite client and see the following error

`Python 3.9.0 (default, Dec 8 2020, 00:44:44)
[Clang 12.0.0 (clang-1200.0.32.27)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

from google.cloud.pubsublite.cloudpubsub import PublisherClient
Traceback (most recent call last):
File "", line 1, in
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/google/cloud/pubsublite/cloudpubsub/init.py", line 23, in
from .subscriber_client import AsyncSubscriberClient, SubscriberClient
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/google/cloud/pubsublite/cloudpubsub/subscriber_client.py", line 29, in
from google.cloud.pubsublite.cloudpubsub.internal.multiplexed_subscriber_client import (
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/google/cloud/pubsublite/cloudpubsub/internal/multiplexed_subscriber_client.py", line 39, in
class MultiplexedSubscriberClient(SubscriberClientInterface):
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/google/cloud/pubsublite/cloudpubsub/internal/multiplexed_subscriber_client.py", line 61, in MultiplexedSubscriberClient
def subscribe(
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/overrides/overrides.py", line 88, in overrides
return _overrides(method, check_signature, check_at_runtime)
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/overrides/overrides.py", line 114, in _overrides
_validate_method(method, super_class, check_signature)
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/overrides/overrides.py", line 135, in _validate_method
ensure_signature_is_compatible(super_method, method, is_static)
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/overrides/signature.py", line 83, in ensure_signature_is_compatible
ensure_all_kwargs_defined_in_sub(
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/overrides/signature.py", line 138, in ensure_all_kwargs_defined_in_sub
and not _issubtype(super_type_hints[name], sub_type_hints[name])
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/overrides/signature.py", line 41, in _issubtype
return issubtype(left, right)
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/typing_utils/init.py", line 274, in issubtype
return _is_normal_subtype(normalize(left), normalize(right), forward_refs)
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/typing_utils/init.py", line 177, in normalize
args = tuple(normalize(a) for a in args)
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/typing_utils/init.py", line 177, in
args = tuple(normalize(a) for a in args)
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/typing_utils/init.py", line 171, in normalize
return NormalizedType(_ensure_builtin(tp))
File "/Users/melchisalins/virtualenvs/python3_mflow/lib/python3.9/site-packages/typing_utils/init.py", line 49, in _ensure_builtin
if tp in BUILTINS_MAPPING:
TypeError: unhashable type: 'list'
`

[dpcollins-google]

Hi all,

I'm currently looking into this issue, although I'm currently unable to reproduce locally. I'll update this issue with any progress.

-Daniel

[anguillanneuf]

Thanks @MelchiSalins and @gariyanto for reporting this issue! This will be fixed soon in the next release. We are cutting a release now.

[dpcollins-google]

The new release has been created which should resolve this issue.

[MelchiSalins]

Will test it today.

[MelchiSalins]

Thanks for fixing this!