is_alive() Return whether the process is alive. Roughly, a process object is alive from the moment the start() method returns until the child process terminates.

empty A special class-level marker to specify absence of default values and annotations.

left The directory a.

AbstractEventLoop.is_closed() Returns True if the event loop was closed. New in version 3.4.2.

class email.header.Header(s=None, charset=None, maxlinelen=None, header_name=None, continuation_ws=' ', errors='strict') Create a MIME-compliant header that can contain strings in different character sets. Optional s is the initial header value. If None (the default), the initial header value is not set. You can later append to the header with append() method calls. s may be an instance of bytes or str, but see the append() documentation for semantics. Optional charset serves two purposes: i

os.mkdir(path, mode=0o777, *, dir_fd=None) Create a directory named path with numeric mode mode. If the directory already exists, FileExistsError is raised. On some systems, mode is ignored. Where it is used, the current umask value is first masked out. If bits other than the last 9 (i.e. the last 3 digits of the octal representation of the mode) are set, their meaning is platform-dependent. On some platforms, they are ignored and you should call chmod() explicitly to set them. This function

inspect.getgeneratorlocals(generator) Get the mapping of live local variables in generator to their current values. A dictionary is returned that maps from variable names to values. This is the equivalent of calling locals() in the body of the generator, and all the same caveats apply. If generator is a generator with no currently associated frame, then an empty dictionary is returned. TypeError is raised if generator is not a Python generator object. CPython implementation detail: This fun

os.isatty(fd) Return True if the file descriptor fd is open and connected to a tty(-like) device, else False.

os.lchflags(path, flags) Set the flags of path to the numeric flags, like chflags(), but do not follow symbolic links. As of Python 3.3, this is equivalent to os.chflags(path, flags, follow_symlinks=False). Availability: Unix.

object.__setstate__(state) Upon unpickling, if the class defines __setstate__(), it is called with the unpickled state. In that case, there is no requirement for the state object to be a dictionary. Otherwise, the pickled state must be a dictionary and its items are assigned to the new instance’s dictionary. Note If __getstate__() returns a false value, the __setstate__() method will not be called upon unpickling.