Why is python setup.py saying invalid command bdist_wheel on Travis CI?

Why is python setup.py saying invalid command bdist_wheel on Travis CI?

Had to install the wheel package. Everything was up to date but still giving the error.

pip install wheel

then

python setup.py bdist_wheel 

worked without issues.

On a AWS Ubuntu 18.04 new machine, below installations are required:

sudo apt-get install gcc libpq-dev -y
sudo apt-get install python-dev  python-pip -y
sudo apt-get install python3-dev python3-pip python3-venv python3-wheel -y
pip3 install wheel

Especially the last line is a must.
However before 3 lines might be required as prerequisites.

Why is python setup.py saying invalid command bdist_wheel on Travis CI?

pip install wheel

worked for me, but you can also add this

setup(
    ...
    setup_requires=[wheel]
)

to setup.py and save yourself a pip install command