This uses Python 3 syntax,
If you're using Python 2 print isn't a function.
You can import this behavior from future:
from __future__ import print_function
How to use
Only activates with .py files
Highlight anything in the editor
Press Cmd+Shift+L (Mac), or Ctrl+Shift+L (Windows)
The output (on a new line) will be: print'variable: ', variable
Keyboard Shortcut
By default the keyboard shortcut is Cmd+Shift+L or Ctrl+Shift+L
If this shortcut interferes with another extension or system wide Shortcut, you may change it in the Keyboard Shortcuts Setting.
Press Cmd+P or Ctrl+P and type in Open Keyboard Shortcuts.
Search for Print Python Selection and click on the pen icon.
This is where you can enter any Shortcut you choose.