Index 78 Python Setup and Usage, Release 3.9.5 T U V W X Z $_{Zen of Python}$, 52 -X command line option , 7 -x command line option , 7 -W arg command line option , 7 -V command line option , 5 -v command line option , 7 variable annotation , 52 --version command line option , 5 virtual environment , 52 virtual machine , 52 -u command line option , 7 universal newlines , 52 text encoding , 51 text file , 51 triple-quoted string , 51 $_{type}$, 51 type alias , 51 type hint , 52