Scripts

• A common extension for Python scripts is .py
  

Shebang

• The first line must be one of the following, to indicate that the file is a Python script:

• #!/usr/bin/python
• #!/usr/bin/env python

• There's some controversy over which of the above approaches is best.
• To find out which location python is run from on a given computer, type "which python"

Executable Python scripts

• The access rights for the file must be set so that the file is executable.

• Under Unix, a complete program can be passed to the interpreter in three forms: with the -c string command line option, as a file passed as the first command line argument, or as standard input.
• If the file or standard input is a tty device, the interpreter enters interactive mode; otherwise, it executes the file as a complete program.