Augments the default search path for imported module files. The format is the same as the shell’s PATH setting: directory pathnames separated by colons (semicolons on Windows). On module imports, Python searches for the corresponding file or directory in each listed directory, from left to right. Merged into sys.path.

If set to the name of a readable file, the Python commands in that file are executed before the first prompt is displayed in interactive mode.

If set, the value is used as an alternate prefix directory for library modules (or sys.prefix, sys.exec_prefix). The default module search path uses sys.prefix/lib.

If set, ignores case in import statements (on Windows).

encodingname[:errorhandler] override used for stdin, stdout, and stderr streams.

If nonempty, same as -d option.

If nonempty, same as -B option.

If nonempty, same as -i option.

If nonempty, same as -s option.

If nonempty, same as -O option.

If nonempty, same as -u option.

If nonempty, same as -v option.