Deprecated call breaking most Google Python packages

[GergelyKalmar]

Environment details

• Programming language: Python
• OS: Ubuntu 20.04 LTS
• Language runtime version: 3.8.10
• Package version: 1.58.0

Steps to reproduce

1. Install googleapis-common-protos==1.58.0 into a virtual environment.
2. Create a file called test.py with the following contents:

import google.rpc

3. Run python -Wall test.py inside the virtual environment and observe the deprecation warnings:

.../lib/python3.8/site-packages/pkg_resources/__init__.py:2804: DeprecationWarning: Deprecated call to `pkg_resources.declare_namespace('google')`.
Implementing implicit namespace packages (as specified in PEP 420) is preferred to `pkg_resources.declare_namespace`. See https://setuptools.pypa.io/en/latest/references/keywords.html#keyword-namespace-packages
declare_namespace(pkg)
.../lib/python3.8/site-packages/pkg_resources/__init__.py:2804: DeprecationWarning: Deprecated call to `pkg_resources.declare_namespace('google.logging')`.
Implementing implicit namespace packages (as specified in PEP 420) is preferred to `pkg_resources.declare_namespace`. See https://setuptools.pypa.io/en/latest/references/keywords.html#keyword-namespace-packages
declare_namespace(pkg)
.../lib/python3.8/site-packages/pkg_resources/__init__.py:2309: DeprecationWarning: Deprecated call to `pkg_resources.declare_namespace('google')`.
Implementing implicit namespace packages (as specified in PEP 420) is preferred to `pkg_resources.declare_namespace`. See https://setuptools.pypa.io/en/latest/references/keywords.html#keyword-namespace-packages
declare_namespace(parent)
.../lib/python3.8/site-packages/google/rpc/__init__.py:20: DeprecationWarning: Deprecated call to `pkg_resources.declare_namespace('google.rpc')`.
Implementing implicit namespace packages (as specified in PEP 420) is preferred to `pkg_resources.declare_namespace`. See https://setuptools.pypa.io/en/latest/references/keywords.html#keyword-namespace-packages
pkg_resources.declare_namespace(__name__)
.../lib/python3.8/site-packages/pkg_resources/__init__.py:2309: DeprecationWarning: Deprecated call to `pkg_resources.declare_namespace('google')`.
Implementing implicit namespace packages (as specified in PEP 420) is preferred to `pkg_resources.declare_namespace`. See https://setuptools.pypa.io/en/latest/references/keywords.html#keyword-namespace-packages
declare_namespace(parent)

The issue seems to be coming primarily from the init files generated here:

api-common-protos/.circleci/config.yml

Line 82 in e16c55b

__import__('pkg_resources').declare_namespace(__name__)

In our test suites warnings are considered errors, and as google-api-core depends on googleapis-common-protos, this issue breaks every run where we import any Google API SDK package.

[rosario-purple]

@GergelyKalmar Upgrading to the latest version of googleapis-common-protos (1.62.0) appears to fix this