- in UNIX like system, chmod +x myscript.py and include a #! in the file would make it executable scripting
- #!/usr/local/bin/python
- UNIX Python path look-up trick: can also use #!/usr/bin/env python to let the system finds the path for you
- Single underscore ‘_’ contains the last evaluated value
- a = 3 a _ #gives 3 notice must explicitly call a, then call _