tf2 tutorial compile failure

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I am running Ubuntu 20.04.3 LTS and following the tf2 tutorials at https://docs.ros.org/en/foxy/Tutorial.... I have managed the static broadcaster OK but can not get the above link to compile. I have installed all the dependencies defined in the static broadcaster tutorial and get a far as Step 3 Build & run in the linked tutorial. However I can not get it to compile. I use the directory ros2_foxy as my equivalent of dev_ws so that I can more easily migrate to galactic. This is my .bashrc_ros which I link at the end of .bashrc whenever a new terminal is opened.

source /opt/ros/foxy/setup.bash

export ROS_DOMAIN_ID=1

cd /home/brian/ros2_foxy/

source install/local_setup.bash

This is the command I enter and the full output

brian@HP-notebook:~/ros2_foxy$ colcon build --symlink-install --packages-select learning_tf2_py Starting >>> learning_tf2_py Traceback (most recent call last):2_py - 0.2s]
File "<string>", line 1, in <module>
File "/usr/lib/python3.8/distutils/core.py", line 215, in run_setup exec(f.read(), g) File "<string>", line 13, in <module> NameError: name 'os' is not defined --- stderr: learning_tf2_py Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/colcon_core/executor/__init__.py", line 91, in __call__ rc = await self.task(args, *kwargs) File "/usr/lib/python3/dist-packages/colcon_core/task/__init__.py", line 93, in __call__ return await task_method(args, *kwargs) File "/usr/lib/python3/dist-packages/colcon_ros/task/ament_python/build.py", line 51, in build setup_py_data = get_setup_data(self.context.pkg, env) File "/usr/lib/python3/dist-packages/colcon_core/task/python/__init__.py", line 20, in get_setup_data return dict(pkg.metadatakey) File "/usr/lib/python3/dist-packages/colcon_ros/package_identification/ros.py", line 129, in getter return get_setup_information( File "/usr/lib/python3/dist-packages/colcon_python_setup_py/package_identification/python_setup_py.py", line 241, in get_setup_information _setup_information_cache[hashable_env] = _get_setup_information( File "/usr/lib/python3/dist-packages/colcon_python_setup_py/package_identification/python_setup_py.py", line 281, in _get_setup_information result = subprocess.run( File "/usr/lib/python3.8/subprocess.py", line 516, in run raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['/usr/bin/python3', '-c', "import sys;from setuptools.extern.packaging.specifiers import SpecifierSet;from distutils.core import run_setup;dist = run_setup( 'setup.py', script_args=('--dry-run',), stop_after='config');skip_keys = ('cmdclass', 'distclass', 'ext_modules', 'metadata');data = {
key: value for key, value in dist.__dict__.items() if (
not key.startswith('_') and
not callable(value) and key not in skip_keys and key not in dist.display_option_names
)};data['metadata'] = { k: v for k, v in dist.metadata.__dict__.items()
if k not in ('license_files', 'provides_extras')};sys.stdout.buffer.write(repr(data).encode('utf-8'))"]' returned non-zero exit status 1. --- Failed <<< learning_tf2_py [0.26s, exited with code 1]

Summary: 0 packages finished [0.36s]
1 package failed: learning_tf2_py 1 package had stderr output: learning_tf2_py Command '['/usr/bin/python3', '-c', "import sys;from setuptools.extern.packaging.specifiers import SpecifierSet;from distutils.core import run_setup;dist = run_setup( 'setup.py', script_args=('--dry-run',), stop_after='config');skip_keys = ('cmdclass', 'distclass', 'ext_modules', 'metadata');data = {
key: value for key, value in dist.__dict__.items() if (
not key.startswith ...