Packer.pack_double(value) Packs the double-precision floating point number value.

os.curdir The constant string used by the operating system to refer to the current directory. This is '.' for Windows and POSIX. Also available via os.path.

readline.get_line_buffer() Return the current contents of the line buffer (rl_line_buffer in the underlying library).

string.whitespace A string containing all ASCII characters that are considered whitespace. This includes the characters space, tab, linefeed, return, formfeed, and vertical tab.

is_local() Return True if the symbol is local to its block.

bdb.effective(file, line, frame) Determine if there is an effective (active) breakpoint at this line of code. Return a tuple of the breakpoint and a boolean that indicates if it is ok to delete a temporary breakpoint. Return (None, None) if there is no matching breakpoint.

class asyncio.Queue(maxsize=0, *, loop=None) A queue, useful for coordinating producer and consumer coroutines. If maxsize is less than or equal to zero, the queue size is infinite. If it is an integer greater than 0, then yield from put() will block when the queue reaches maxsize, until an item is removed by get(). Unlike the standard library queue, you can reliably know this Queue’s size with qsize(), since your single-threaded asyncio application won’t be interrupted between calling qsize

close() Closes the socket.

exception mailbox.Error The based class for all other module-specific exceptions.

addr Holds the address of the client, the second value returned by socket.accept