to call via console a python-programm

[bowlofred]

The default installer will also create a py.exe in your path. You can use that instead if you prefer.

The >>> string is the prompt from the interactive python interpreter. You can type python commands, but that's not how you run python scripts. Run them from the C:> prompt. Are you typing the "C:\Python39...." stuff? That should just be a prompt, not the part you type.

C:\> py zeit_01.py

or

C:\> python zeit_01.py

Note no ">>>" in the prompt.