Python - Running just a single line of code, and not the rest of the Multiple lines in the Script

Question

In - Python, inside the the IDLE, in the File Editor Window,

How do you run just a selected single line of code in the script, without having the rest of the lines of the program being runned ?

Solution

You'll have to run your line of code form command line:

With the -c (command) argument (assuming your file is named foo.py):

$ python -c 'import foo; print foo.hello()'