["python","function","command-line"]
Run function from the command line

I have this code: def hello(): return 'Hi :)' How would I run this directly from the command line? See also: What does if __name__ == "__main__": do? to explain the standard idiom for getting the code started; Why doesn't the main() function run when I start a Python script? Where does the script start running (what is its entry point)? for why things like this are necessary
With the -c (command) argument (assuming your file is named foo.py): $ python -c 'import foo; print foo.hello()' Alternatively, if you don't care about namespace pollution: $ python -c 'from foo import *; print hello()' And the middle ground: $ python -c 'from foo import hello; print hello()'