76. Write a Python program to get the command-line arguments (name of the script, the number of arguments, arguments) passed to a script. Go to the editorClick me to see the sample solution
The fact that Mr Screws rarely spoke but could type out commands with confidence made me think he was brilliant. As a college sophomore, I remember being transfixed as I watched him type obscure command after obscure command into the DOS prompt.
COMMAND AND CONQUER FOR WINDOWS.95-CLS CPY
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.moduleB is a relative import. Relative only works when the parent module is imported or loaded first. That means you need to have proj imported somewhere in your current runtime environment. When you are are using command python3 moduleA.py3, it is getting no chance to import parent module. You can:
I'm developing a project which in fact is a Python package that can be installed through pip, but it also exposes a command line interface. I don't have problems running my project after installing it with pip install ., but hey, who does this every time after changing something in one of the project files? I needed to run the whole thing through simple python mypackage/main.py.
The cause of this problem is that the main.py was executed directly by python command, thus becoming the main module named __main__. If we connect this information with the relative import we used, we get what we have in the error message: __main__.common. This is explained in the Python documentation:
If we now try to run this as before: python mypackage/main.py, then it works as expected! But, there's a caveat when you, like me, develop something that need to work as a standalone command line tool after installing it with pip. I installed my package with pip install . and then tried to run it...
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