class asyncio.SubprocessProtocol The base class for implementing protocols communicating with child processes (through a set of unidirectional pipes).

set_boundary(boundary) Set the boundary parameter of the Content-Type header to boundary. set_boundary() will always quote boundary if necessary. A HeaderParseError is raised if the message object has no Content-Type header. Note that using this method is subtly different than deleting the old Content-Type header and adding a new one with the new boundary via add_header(), because set_boundary() preserves the order of the Content-Type header in the list of headers. However, it does not prese

random.sample(population, k) Return a k length list of unique elements chosen from the population sequence or set. Used for random sampling without replacement. Returns a new list containing elements from the population while leaving the original population unchanged. The resulting list is in selection order so that all sub-slices will also be valid random samples. This allows raffle winners (the sample) to be partitioned into grand prize and second place winners (the subslices). Members of

class argparse.FileType(mode='r', bufsize=-1, encoding=None, errors=None) The FileType factory creates objects that can be passed to the type argument of ArgumentParser.add_argument(). Arguments that have FileType objects as their type will open command-line arguments as files with the requested modes, buffer sizes, encodings and error handling (see the open() function for more details): >>> parser = argparse.ArgumentParser() >>> parser.add_argument('--raw', type=argparse.F

lock() Acquire an exclusive advisory lock on the mailbox so that other processes know not to modify it. An ExternalClashError is raised if the lock is not available. The particular locking mechanisms used depend upon the mailbox format. You should always lock the mailbox before making any modifications to its contents.

operator.inv(obj) operator.invert(obj) operator.__inv__(obj) operator.__invert__(obj) Return the bitwise inverse of the number obj. This is equivalent to ~obj.

class logging.handlers.SMTPHandler(mailhost, fromaddr, toaddrs, subject, credentials=None, secure=None, timeout=1.0) Returns a new instance of the SMTPHandler class. The instance is initialized with the from and to addresses and subject line of the email. The toaddrs should be a list of strings. To specify a non-standard SMTP port, use the (host, port) tuple format for the mailhost argument. If you use a string, the standard SMTP port is used. If your SMTP server requires authentication, you

BaseProtocol.connection_made(transport) Called when a connection is made. The transport argument is the transport representing the connection. You are responsible for storing it somewhere (e.g. as an attribute) if you need to.

importlib.util.find_spec(name, package=None) Find the spec for a module, optionally relative to the specified package name. If the module is in sys.modules, then sys.modules[name].__spec__ is returned (unless the spec would be None or is not set, in which case ValueError is raised). Otherwise a search using sys.meta_path is done. None is returned if no spec is found. If name is for a submodule (contains a dot), the parent module is automatically imported. name and package work the same as fo

HTMLParser.feed(data) Feed some text to the parser. It is processed insofar as it consists of complete elements; incomplete data is buffered until more data is fed or close() is called. data must be str.