os.startfile(path[, operation]) Start a file with its associated application. When operation

os.setpgrp() Call the system call setpgrp() or setpgrp(0, 0) depending on which version is implemented

window.move(new_y, new_x) Move cursor to (new_y, new_x).

os.system(command) Execute the command (a string) in a subshell. This is implemented by calling the Standard C function system()

raw The underlying raw stream (a RawIOBase instance) that BufferedIOBase deals with. This is not part

os.access(path, mode, *, dir_fd=None, effective_ids=False, follow_symlinks=True) Use the real uid/gid to test for access to

os.curdir The constant string used by the operating system to refer to the current directory. This is '.' for Windows

class argparse.MetavarTypeHelpFormatter

curses.ascii.ispunct(c) Checks for any printable ASCII character which is not a space or an alphanumeric character.

os.fork() Fork a child process. Return 0 in the child and the child’s process id in the parent. If an error occurs