I have Python 2.7 (my preferred version) and 3.3 (version used in my Programming class) installed on my computer (OS: Windows 7). Until a certain point, they worked fine ind
You can launch with a specific version of python from the command line by using 'py' followed by a version flag (i.e. -2 or -3)
Here is an example of what you could do:
Python 2
>>> py -2 your_script.py
OR
Python 3
>>> py -3 your_script.py