% python [-diOSuvsxXt?] [-c
filename| - ][
Turn on parser debugging output (for wizards).
Enter interactive mode after executing a script or command, without reading $PYTHONSTARTUP. Useful for postmortem debugging.
Optimize generated byte-code.
Don’t imply “import site” on initialization.
Force stdout and stderr to be totally unbuffered.
Print a message each time a module is initialized, showing the place from which it is loaded.
Suppress printing of top-level expression results.
Skip first line of source, allowing use of non-UNIX forms of #!cmd.
Disable class-based built-in exceptions (for backward compatibility: forces string exceptions).
Warn about mixed tabs and spaces in indentation.
Print help message.
Specify a Python command (as a string) to execute.
The name of a Python script file to execute.
Read Python commands from stdin (the default); enter interactive mode if stdin is a tty.
Anything else on the command line is passed to the script or command (and appears in list sys.argv[1:]).
If no script or command, Python enters interactive mode (uses GNU readline for input if installed). Command-line options can be strung together or listed individually (e.g., “python -svd” is the same as “python -s -v -d”).