streamwriter streamreader Stream writer and reader classes or factory functions. These have to provide the interface defined by the base classes StreamWriter and StreamReader, respectively. Stream codecs can maintain state.

class asyncio.AbstractEventLoop Abstract base class of event loops. This class is not thread safe.

curses.termattrs() Return a logical OR of all video attributes supported by the terminal. This information is useful when a curses program needs complete control over the appearance of the screen.

imaplib.Internaldate2tuple(datestr) Parse an IMAP4 INTERNALDATE string and return corresponding local time. The return value is a time.struct_time tuple or None if the string has wrong format.

Telnet.read_lazy() Process and return data already in the queues (lazy). Raise EOFError if connection closed and no data available. Return b'' if no cooked data available otherwise. Do not block unless in the midst of an IAC sequence.

pack(v1, v2, ...) Identical to the pack() function, using the compiled format. (len(result) will equal size.)

lngettext(singular, plural, n) If a fallback has been set, forward lngettext() to the fallback. Otherwise, return the translated message. Overridden in derived classes.

xml.sax.handler.all_properties List of all known property names.

sys.call_tracing(func, args) Call func(*args), while tracing is enabled. The tracing state is saved, and restored afterwards. This is intended to be called from a debugger from a checkpoint, to recursively debug some other code.

readline.set_completer_delims(string) readline.get_completer_delims() Set or get the word delimiters for completion. These determine the start of the word to be considered for completion (the completion scope). These functions access the rl_completer_word_break_characters variable in the underlying library.