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Adds and starts a behaviour to the agent. If template is not None it is used to match new messages and deliver them to the behaviour. Args: behaviour (spade.behaviour.CyclicBehaviour): the behaviour to be started template (spade.template.Template, optional): the template to match messages with (Default value = None)
def add_behaviour(self, behaviour, template=None): behaviour.set_agent(self) if issubclass(type(behaviour), FSMBehaviour): for _, state in behaviour.get_states().items(): state.set_agent(self) behaviour.set_template(template) self.behaviours.append(behaviour) if self.is_alive(): behaviour.start()
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Removes a behaviour from the agent. The behaviour is first killed. Args: behaviour (spade.behaviour.CyclicBehaviour): the behaviour instance to be removed
def remove_behaviour(self, behaviour): if not self.has_behaviour(behaviour): raise ValueError("This behaviour is not registered") index = self.behaviours.index(behaviour) self.behaviours[index].kill() self.behaviours.pop(index)
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Callback run when an XMPP Message is reveived. This callback delivers the message to every behaviour that is waiting for it. First, the aioxmpp.Message is converted to spade.message.Message Args: msg (aioxmpp.Messagge): the message just received. Returns: list(asyncio.Future): a list of futures of the append of the message at each matched behaviour.
def _message_received(self, msg): msg = Message.from_node(msg) return self.dispatch(msg)
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Dispatch the message to every behaviour that is waiting for it using their templates match. Args: msg (spade.message.Messagge): the message to dispatch. Returns: list(asyncio.Future): a list of futures of the append of the message at each matched behaviour.
def dispatch(self, msg): logger.debug(f"Got message: {msg}") futures = [] matched = False for behaviour in (x for x in self.behaviours if x.match(msg)): futures.append(self.submit(behaviour.enqueue(msg))) logger.debug(f"Message enqueued to behaviour: {behaviour}") self.traces.append(msg, category=str(behaviour)) matched = True if not matched: logger.warning(f"No behaviour matched for message: {msg}") self.traces.append(msg) return futures
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Creates a new spade.message.Message from an aixoxmpp.stanza.Message Args: node (aioxmpp.stanza.Message): an aioxmpp Message Returns: spade.message.Message: a new spade Message
def from_node(cls, node): if not isinstance(node, aioxmpp.stanza.Message): raise AttributeError("node must be a aioxmpp.stanza.Message instance") msg = cls() msg._to = node.to msg._sender = node.from_ if None in node.body: msg.body = node.body[None] else: for key in node.body.keys(): msg.body = node.body[key] break for data in node.xep0004_data: if data.title == SPADE_X_METADATA: for field in data.fields: if field.var != "_thread_node": msg.set_metadata(field.var, field.values[0]) else: msg.thread = field.values[0] return msg
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Set jid of the receiver. Args: jid (str): the jid of the receiver.
def to(self, jid: str): if jid is not None and not isinstance(jid, str): raise TypeError("'to' MUST be a string") self._to = aioxmpp.JID.fromstr(jid) if jid is not None else None
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Set jid of the sender Args: jid (str): jid of the sender
def sender(self, jid: str): if jid is not None and not isinstance(jid, str): raise TypeError("'sender' MUST be a string") self._sender = aioxmpp.JID.fromstr(jid) if jid is not None else None
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Set body of the message Args: body (str): The body of the message
def body(self, body: str): if body is not None and not isinstance(body, str): raise TypeError("'body' MUST be a string") self._body = body
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Set thread id of the message Args: value (str): the thread id
def thread(self, value: str): if value is not None and not isinstance(value, str): raise TypeError("'thread' MUST be a string") self._thread = value
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Add a new metadata to the message Args: key (str): name of the metadata value (str): value of the metadata
def set_metadata(self, key: str, value: str): if not isinstance(key, str) or not isinstance(value, str): raise TypeError("'key' and 'value' of metadata MUST be strings") self.metadata[key] = value
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Get the value of a metadata. Returns None if metadata does not exist. Args: key (str): name of the metadata Returns: str: the value of the metadata (or None)
def get_metadata(self, key) -> str: return self.metadata[key] if key in self.metadata else None
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Returns wether a message matches with this message or not. The message can be a Message object or a Template object. Args: message (spade.message.Message): the message to match to Returns: bool: wether the message matches or not
def match(self, message) -> bool: if self.to and message.to != self.to: return False if self.sender and message.sender != self.sender: return False if self.body and message.body != self.body: return False if self.thread and message.thread != self.thread: return False for key, value in self.metadata.items(): if message.get_metadata(key) != value: return False logger.debug(f"message matched {self} == {message}") return True
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Listens to http requests and sends them to the webapp. Args: runner: AppRunner to process the http requests hostname: host name to listen from. port: port to listen from. agent: agent that owns the web app.
async def start_server_in_loop(runner, hostname, port, agent): await runner.setup() agent.web.server = aioweb.TCPSite(runner, hostname, port) await agent.web.server.start() logger.info(f"Serving on http://{hostname}:{port}/")
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Starts the web interface. Args: hostname (str, optional): host name to listen from. (Default value = None) port (int, optional): port to listen from. (Default value = None) templates_path (str, optional): path to look for templates. (Default value = None)
def start(self, hostname=None, port=None, templates_path=None): self.hostname = hostname if hostname else "localhost" if port: self.port = port elif not self.port: self.port = unused_port(self.hostname) if templates_path: self.loaders.insert(0, jinja2.FileSystemLoader(templates_path)) self._set_loaders() self.setup_routes() self.runner = aioweb.AppRunner(self.app) return self.agent.submit(start_server_in_loop(self.runner, self.hostname, self.port, self.agent))
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Setup a route of type GET Args: path (str): URL to listen to controller (coroutine): the coroutine to handle the request template (str): the template to render the response or None if it is a JSON response raw (bool): indicates if post-processing (jinja, json, etc) is needed or not
def add_get(self, path, controller, template, raw=False): if raw: fn = controller else: fn = self._prepare_controller(controller, template) self.app.router.add_get(path, fn)
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Wraps the controller wether to render a jinja template or to return a json response (if template is None) Args: controller (coroutine): the coroutine to be wrapped template (str): the name of the template or None Returns: coroutine: a wrapped coroutine of the controller
def _prepare_controller(self, controller, template): if template: fn = aiohttp_jinja2.template(template_name=template)(controller) else: fn = self._parse_json_response(controller) return fn
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Links behaviour with its owner agent Args: agent (spade.agent.Agent): the agent who owns the behaviour
def set_agent(self, agent): self.agent = agent self.queue = asyncio.Queue(loop=self.agent.loop) self.presence = agent.presence self.web = agent.web
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Matches a message with the behaviour's template Args: message(spade.message.Message): the message to match with Returns: bool: wheter the messaged matches or not
def match(self, message: Message) -> bool: if self.template: return self.template.match(message) return True
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Stores a knowledge item in the agent knowledge base. Args: name (str): name of the item value (Any): value of the item
def set(self, name: str, value: Any) -> None: self.agent.set(name, value)
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Stops the behaviour Args: exit_code (object, optional): the exit code of the behaviour (Default value = None)
def kill(self, exit_code: Any = None): self._force_kill.set() if exit_code is not None: self._exit_code = exit_code logger.info("Killing behavior {0} with exit code: {1}".format(self, exit_code))
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Sends a message. Args: msg (spade.message.Message): the message to be sent.
async def send(self, msg: Message): if not msg.sender: msg.sender = str(self.agent.jid) logger.debug(f"Adding agent's jid as sender to message: {msg}") await self.agent.container.send(msg, self) msg.sent = True self.agent.traces.append(msg, category=str(self))
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Receives a message for this behaviour. If timeout is not None it returns the message or "None" after timeout is done. Args: timeout (float): number of seconds until return Returns: spade.message.Message: a Message or None
async def receive(self, timeout: float = None) -> Union[Message, None]: if timeout: coro = self.queue.get() try: msg = await asyncio.wait_for(coro, timeout=timeout) except asyncio.TimeoutError: msg = None else: try: msg = self.queue.get_nowait() except asyncio.QueueEmpty: msg = None return msg
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Creates a periodic behaviour. Args: period (float): interval of the behaviour in seconds start_at (datetime.datetime): whether to start the behaviour with an offset
def __init__(self, period, start_at=None): super().__init__() self._period = None self.period = period if start_at: self._next_activation = start_at else: self._next_activation = now()
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Set the period. Args: value (float): seconds
def period(self, value: float): if value < 0: raise ValueError("Period must be greater or equal than zero.") self._period = timedelta(seconds=value)
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Creates a timeout behaviour, which is run at start_at Args: start_at (datetime.datetime): when to start the behaviour
def __init__(self, start_at): super().__init__() self._timeout = start_at self._timeout_triggered = False
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Adds a new state to the FSM. Args: name (str): the name of the state, which is used as its identifier. state (spade.behaviour.State): The state class initial (bool, optional): wether the state is the initial state or not. (Only one initial state is allowed) (Default value = False)
def add_state(self, name: str, state: State, initial: bool = False): if not issubclass(state.__class__, State): raise AttributeError("state must be subclass of spade.behaviour.State") self._states[name] = state if initial: self.current_state = name
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Adds a transition from one state to another. Args: source (str): the name of the state from where the transition starts dest (str): the name of the state where the transition ends
def add_transition(self, source: str, dest: str): self._transitions[source].append(dest)
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Checks if a transitions is registered in the FSM Args: source (str): the source state name dest (str): the destination state name Returns: bool: wether the transition is valid or not
def is_valid_transition(self, source: str, dest: str) -> bool: if dest not in self._states or source not in self._states: raise NotValidState elif dest not in self._transitions[source]: raise NotValidTransition return True
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Create a new choice. Args: title: Text shown in the selection list. value: Value returned, when the choice is selected. disabled: If set, the choice can not be selected by the user. The provided text is used to explain, why the selection is disabled. checked: Preselect this choice when displaying the options. shortcut_key: Key shortcut used to select this item.
def __init__(self, title: Text, value: Optional[Any] = None, disabled: Optional[Text] = None, checked: bool = False, shortcut_key: Optional[Text] = None) -> None: self.disabled = disabled self.value = value if value is not None else title self.title = title self.checked = checked if shortcut_key is not None: self.shortcut_key = str(shortcut_key) else: self.shortcut_key = None
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Create a separator in a list. Args: line: Text to be displayed in the list, by default uses `---`.
def __init__(self, line: Optional[Text] = None): self.line = line or self.default_separator super(Separator, self).__init__(self.line, None, "-")
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Avro file reader. Args: file_path_or_buffer: Input file path or file-like object. schema: Avro schema. **kwargs: Keyword argument to pandas.DataFrame.from_records. Returns: Class of pd.DataFrame.
def read_avro(file_path_or_buffer, schema=None, **kwargs): if isinstance(file_path_or_buffer, six.string_types): with open(file_path_or_buffer, 'rb') as f: return __file_to_dataframe(f, schema, **kwargs) else: return __file_to_dataframe(file_path_or_buffer, schema, **kwargs)
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Query the search index for sets similar to the query set. Args: s (Iterable): the query set. Returns (list): a list of tuples `(index, similarity)` where the index is the index of the matching sets in the original list of sets.
def query(self, s): s1 = np.sort([self.order[token] for token in s if token in self.order]) logging.debug("{} original tokens and {} tokens after applying " "frequency order.".format(len(s), len(s1))) prefix = self._get_prefix(s1) candidates = set([i for p1, token in enumerate(prefix) for i, p2 in self.index[token] if self.position_filter_func(s1, self.sets[i], p1, p2, self.similarity_threshold)]) logging.debug("{} candidates found.".format(len(candidates))) results = deque([]) for i in candidates: s2 = self.sets[i] sim = self.similarity_func(s1, s2) if sim < self.similarity_threshold: continue results.append((i, sim)) logging.debug("{} verified sets found.".format(len(results))) return list(results)
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Give random samples for a binary quadratic model. Variable assignments are chosen by coin flip. Args: bqm (:obj:`.BinaryQuadraticModel`): Binary quadratic model to be sampled from. num_reads (int, optional, default=10): Number of reads. Returns: :obj:`.SampleSet`
def sample(self, bqm, num_reads=10): values = tuple(bqm.vartype.value) def _itersample(): for __ in range(num_reads): sample = {v: choice(values) for v in bqm.linear} energy = bqm.energy(sample) yield sample, energy samples, energies = zip(*_itersample()) return SampleSet.from_samples(samples, bqm.vartype, energies)
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Sample from the problem provided by bqm and truncate output. Args: bqm (:obj:`dimod.BinaryQuadraticModel`): Binary quadratic model to be sampled from. **kwargs: Parameters for the sampling method, specified by the child sampler. Returns: :obj:`dimod.SampleSet`
def sample(self, bqm, **kwargs): tkw = self._truncate_kwargs if self._aggregate: return self.child.sample(bqm, **kwargs).aggregate().truncate(**tkw) else: return self.child.sample(bqm, **kwargs).truncate(**tkw)
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Sample from a binary quadratic model. Args: bqm (:obj:`~dimod.BinaryQuadraticModel`): Binary quadratic model to be sampled from. Returns: :obj:`~dimod.SampleSet`
def sample(self, bqm): M = bqm.binary.to_numpy_matrix() off = bqm.binary.offset if M.shape == (0, 0): return SampleSet.from_samples([], bqm.vartype, energy=[]) sample = np.zeros((len(bqm),), dtype=bool) # now we iterate, flipping one bit at a time until we have # traversed all samples. This is a Gray code. # https://en.wikipedia.org/wiki/Gray_code def iter_samples(): sample = np.zeros((len(bqm)), dtype=bool) energy = 0.0 yield sample.copy(), energy + off for i in range(1, 1 << len(bqm)): v = _ffs(i) # flip the bit in the sample sample[v] = not sample[v] # for now just calculate the energy, but there is a more clever way by calculating # the energy delta for the single bit flip, don't have time, pull requests # appreciated! energy = sample.dot(M).dot(sample.transpose()) yield sample.copy(), float(energy) + off samples, energies = zip(*iter_samples()) response = SampleSet.from_samples(np.array(samples, dtype='int8'), Vartype.BINARY, energies) # make sure the response matches the given vartype, in-place. response.change_vartype(bqm.vartype, inplace=True) return response
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Cast various inputs to a valid vartype object. Args: vartype (:class:`.Vartype`/str/set): Variable type. Accepted input values: * :class:`.Vartype.SPIN`, ``'SPIN'``, ``{-1, 1}`` * :class:`.Vartype.BINARY`, ``'BINARY'``, ``{0, 1}`` Returns: :class:`.Vartype`: Either :class:`.Vartype.SPIN` or :class:`.Vartype.BINARY`. See also: :func:`~dimod.decorators.vartype_argument`
def as_vartype(vartype): if isinstance(vartype, Vartype): return vartype try: if isinstance(vartype, str): vartype = Vartype[vartype] elif isinstance(vartype, frozenset): vartype = Vartype(vartype) else: vartype = Vartype(frozenset(vartype)) except (ValueError, KeyError): raise TypeError(("expected input vartype to be one of: " "Vartype.SPIN, 'SPIN', {-1, 1}, " "Vartype.BINARY, 'BINARY', or {0, 1}.")) return vartype
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The energy of the given sample. Args: sample_like (samples_like): A raw sample. `sample_like` is an extension of NumPy's array_like structure. See :func:`.as_samples`. dtype (:class:`numpy.dtype`, optional): The data type of the returned energies. Defaults to float. Returns: The energy.
def energy(self, sample_like, dtype=np.float): energy, = self.energies(sample_like, dtype=dtype) return energy
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The energies of the given samples. Args: samples_like (samples_like): A collection of raw samples. `samples_like` is an extension of NumPy's array_like structure. See :func:`.as_samples`. dtype (:class:`numpy.dtype`, optional): The data type of the returned energies. Defaults to float. Returns: :obj:`numpy.ndarray`: The energies.
def energies(self, samples_like, dtype=np.float): samples, labels = as_samples(samples_like) if labels: idx, label = zip(*enumerate(labels)) labeldict = dict(zip(label, idx)) else: labeldict = {} num_samples = samples.shape[0] energies = np.zeros(num_samples, dtype=dtype) for term, bias in self.items(): if len(term) == 0: energies += bias else: energies += np.prod([samples[:, labeldict[v]] for v in term], axis=0) * bias return energies
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Multiply the polynomial by the given scalar. Args: scalar (number): Value to multiply the polynomial by. ignored_terms (iterable, optional): Biases associated with these terms are not scaled.
def scale(self, scalar, ignored_terms=None): if ignored_terms is None: ignored_terms = set() else: ignored_terms = {asfrozenset(term) for term in ignored_terms} for term in self: if term not in ignored_terms: self[term] *= scalar
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Construct a binary polynomial from a higher-order Ising problem. Args: h (dict): The linear biases. J (dict): The higher-order biases. offset (optional, default=0.0): Constant offset applied to the model. Returns: :obj:`.BinaryPolynomial` Examples: >>> poly = dimod.BinaryPolynomial.from_hising({'a': 2}, {'ab': -1}, 0)
def from_hising(cls, h, J, offset=None): poly = {(k,): v for k, v in h.items()} poly.update(J) if offset is not None: poly[frozenset([])] = offset return cls(poly, Vartype.SPIN)
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Construct a binary polynomial from a higher-order unconstrained binary optimization (HUBO) problem. Args: H (dict): Coefficients of a higher-order unconstrained binary optimization (HUBO) model. Returns: :obj:`.BinaryPolynomial` Examples: >>> poly = dimod.BinaryPolynomial.from_hubo({('a', 'b', 'c'): -1})
def from_hubo(cls, H, offset=None): poly = cls(H, Vartype.BINARY) if offset is not None: poly[()] = poly.get((), 0) + offset return poly
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Return a binary polynomial over `{0, 1}` variables. Args: copy (optional, default=False): If True, the returned polynomial is always a copy. Otherwise, if the polynomial is binary-valued already it returns itself. Returns: :obj:`.BinaryPolynomial`
def to_binary(self, copy=False): if self.vartype is Vartype.BINARY: if copy: return self.copy() else: return self new = BinaryPolynomial({}, Vartype.BINARY) # s = 2x - 1 for term, bias in self.items(): for t in map(frozenset, powerset(term)): newbias = bias * 2**len(t) * (-1)**(len(term) - len(t)) if t in new: new[t] += newbias else: new[t] = newbias return new
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Determines a vertex coloring. Args: adj (dict): The edge structure of the graph to be colored. `adj` should be of the form {node: neighbors, ...} where neighbors is a set. Returns: dict: the coloring {node: color, ...} dict: the colors {color: [node, ...], ...} Note: This is a greedy heuristic: the resulting coloring is not necessarily minimal.
def greedy_coloring(adj): # now let's start coloring coloring = {} colors = {} possible_colors = {n: set(range(len(adj))) for n in adj} while possible_colors: # get the n with the fewest possible colors n = min(possible_colors, key=lambda n: len(possible_colors[n])) # assign that node the lowest color it can still have color = min(possible_colors[n]) coloring[n] = color if color not in colors: colors[color] = {n} else: colors[color].add(n) # also remove color from the possible colors for n's neighbors for neighbor in adj[n]: if neighbor in possible_colors and color in possible_colors[neighbor]: possible_colors[neighbor].remove(color) # finally remove n from nodes del possible_colors[n] return coloring, colors
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Fix the value of the variables and remove it from a binary quadratic model. Args: fixed (dict): A dictionary of variable assignments. Examples: >>> bqm = dimod.BinaryQuadraticModel({'a': -.5, 'b': 0., 'c': 5}, {('a', 'b'): -1}, 0.0, dimod.SPIN) >>> bqm.fix_variables({'a': -1, 'b': +1})
def fix_variables(self, fixed): for v, val in fixed.items(): self.fix_variable(v, val)
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Determine the energies of the given samples. Args: samples_like (samples_like): A collection of raw samples. `samples_like` is an extension of NumPy's array_like structure. See :func:`.as_samples`. dtype (:class:`numpy.dtype`): The data type of the returned energies. Returns: :obj:`numpy.ndarray`: The energies.
def energies(self, samples_like, dtype=np.float): samples, labels = as_samples(samples_like) if all(v == idx for idx, v in enumerate(labels)): ldata, (irow, icol, qdata), offset = self.to_numpy_vectors(dtype=dtype) else: ldata, (irow, icol, qdata), offset = self.to_numpy_vectors(variable_order=labels, dtype=dtype) energies = samples.dot(ldata) + (samples[:, irow]*samples[:, icol]).dot(qdata) + offset return np.asarray(energies, dtype=dtype)
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Sample from the provided binary quadratic model. Args: bqm (:obj:`dimod.BinaryQuadraticModel`): Binary quadratic model to be sampled from. fixed_variables (dict): A dictionary of variable assignments. **parameters: Parameters for the sampling method, specified by the child sampler. Returns: :obj:`dimod.SampleSet`
def sample(self, bqm, fixed_variables=None, **parameters): # solve the problem on the child system child = self.child bqm_copy = bqm.copy() if fixed_variables is None: fixed_variables = {} bqm_copy.fix_variables(fixed_variables) sampleset = child.sample(bqm_copy, **parameters) if len(sampleset): return sampleset.append_variables(fixed_variables) elif fixed_variables: return type(sampleset).from_samples_bqm(fixed_variables, bqm=bqm) else: # no fixed variables and sampleset is empty return sampleset
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Create a bqm with a gap of 2 that represents the product of two variables. Note that spin-product requires an auxiliary variable. Args: variables (list): multiplier, multiplicand, product, aux Returns: :obj:`.BinaryQuadraticModel`
def _spin_product(variables): multiplier, multiplicand, product, aux = variables return BinaryQuadraticModel({multiplier: -.5, multiplicand: -.5, product: -.5, aux: -1.}, {(multiplier, multiplicand): .5, (multiplier, product): .5, (multiplier, aux): 1., (multiplicand, product): .5, (multiplicand, aux): 1., (product, aux): 1.}, 2., Vartype.SPIN)
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Create a bqm with a gap of 2 that represents the product of two variables. Args: variables (list): multiplier, multiplicand, product Returns: :obj:`.BinaryQuadraticModel`
def _binary_product(variables): multiplier, multiplicand, product = variables return BinaryQuadraticModel({multiplier: 0.0, multiplicand: 0.0, product: 3.0}, {(multiplier, multiplicand): 1.0, (multiplier, product): -2.0, (multiplicand, product): -2.0}, 0.0, Vartype.BINARY)
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Calculates energy of a sample from a higher order polynomial. Args: sample (samples_like): A raw sample. `samples_like` is an extension of NumPy's array_like structure. See :func:`.as_samples`. poly (dict): Polynomial as a dict of form {term: bias, ...}, where `term` is a tuple of variables and `bias` the associated bias. Returns: float: The energy of the sample.
def poly_energy(sample_like, poly): msg = ("poly_energy is deprecated and will be removed in dimod 0.9.0." "In the future, use BinaryPolynomial.energy") warnings.warn(msg, DeprecationWarning) # dev note the vartype is not used in the energy calculation and this will # be deprecated in the future return BinaryPolynomial(poly, 'SPIN').energy(sample_like)
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Add a column to the table. Args: header (str): Column header f (function(datum)->str): Makes the row string from the datum. Str returned by f should have the same width as header.
def append(self, header, f, _left=False): self.items_length += len(header) if _left: self.deque.appendleft((header, f)) else: self.deque.append((header, f))
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Sample from the binary polynomial and truncate output. Args: poly (obj:`.BinaryPolynomial`): A binary polynomial. **kwargs: Parameters for the sampling method, specified by the child sampler. Returns: :obj:`dimod.SampleSet`
def sample_poly(self, poly, **kwargs): tkw = self._truncate_kwargs if self._aggregate: return self.child.sample_poly(poly, **kwargs).aggregate().truncate(**tkw) else: return self.child.sample_poly(poly, **kwargs).truncate(**tkw)
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Split an image into a specified number of tiles. Args: filename (str): The filename of the image to split. number_tiles (int): The number of tiles required. Kwargs: save (bool): Whether or not to save tiles to disk. Returns: Tuple of :class:`Tile` instances.
def slice(filename, number_tiles=None, col=None, row=None, save=True): im = Image.open(filename) im_w, im_h = im.size columns = 0 rows = 0 if not number_tiles is None: validate_image(im, number_tiles) columns, rows = calc_columns_rows(number_tiles) extras = (columns * rows) - number_tiles else: validate_image_col_row(im, col, row) columns = col rows = row extras = (columns * rows) - number_tiles tile_w, tile_h = int(floor(im_w / columns)), int(floor(im_h / rows)) tiles = [] number = 1 for pos_y in range(0, im_h - rows, tile_h): # -rows for rounding error. for pos_x in range(0, im_w - columns, tile_w): # as above. area = (pos_x, pos_y, pos_x + tile_w, pos_y + tile_h) image = im.crop(area) position = (int(floor(pos_x / tile_w)) + 1, int(floor(pos_y / tile_h)) + 1) coords = (pos_x, pos_y) tile = Tile(image, number, position, coords) tiles.append(tile) number += 1 if save: save_tiles(tiles, prefix=get_basename(filename), directory=os.path.dirname(filename)) return tuple(tiles)
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Write image files to disk. Create specified folder(s) if they don't exist. Return list of :class:`Tile` instance. Args: tiles (list): List, tuple or set of :class:`Tile` objects to save. prefix (str): Filename prefix of saved tiles. Kwargs: directory (str): Directory to save tiles. Created if non-existant. Returns: Tuple of :class:`Tile` instances.
def save_tiles(tiles, prefix='', directory=os.getcwd(), format='png'): # Causes problems in CLI script. # if not os.path.exists(directory): # os.makedirs(directory) for tile in tiles: tile.save(filename=tile.generate_filename(prefix=prefix, directory=directory, format=format), format=format) return tuple(tiles)
412,711
Set the current user's presence on the network. Supports :attr:`.Status.Online`, :attr:`.Status.Busy` or :attr:`.Status.Hidden` (shown as :attr:`.Status.Offline` to others). Args: status (.Status): new availability to display to contacts
def setPresence(self, status=SkypeUtils.Status.Online): self.conn("PUT", "{0}/users/ME/presenceDocs/messagingService".format(self.conn.msgsHost), auth=SkypeConnection.Auth.RegToken, json={"status": status.label})
412,721
Update the activity message for the current user. Args: mood (str): new mood message
def setMood(self, mood): self.conn("POST", "{0}/users/{1}/profile/partial".format(SkypeConnection.API_USER, self.userId), auth=SkypeConnection.Auth.SkypeToken, json={"payload": {"mood": mood or ""}}) self.user.mood = SkypeUser.Mood(plain=mood) if mood else None
412,722
Update the profile picture for the current user. Args: image (file): a file-like object to read the image from
def setAvatar(self, image): self.conn("PUT", "{0}/users/{1}/profile/avatar".format(SkypeConnection.API_USER, self.userId), auth=SkypeConnection.Auth.SkypeToken, data=image.read())
412,723
Retrieve various metadata associated with a URL, as seen by Skype. Args: url (str): address to ping for info Returns: dict: metadata for the website queried
def getUrlMeta(self, url): return self.conn("GET", SkypeConnection.API_URL, params={"url": url}, auth=SkypeConnection.Auth.Authorize).json()
412,724
Attempt translation of a string. Supports automatic language detection if ``fromLang`` is not specified. Args: text (str): input text to be translated toLang (str): country code of output language fromLang (str): country code of input language
def __call__(self, text, toLang, fromLang=None): return self.skype.conn("GET", "{0}/skype/translate".format(SkypeConnection.API_TRANSLATE), params={"from": fromLang or "", "to": toLang, "text": text}, auth=SkypeConnection.Auth.SkypeToken).json()
412,736
Retrieve all details for a specific contact, including fields such as birthday and mood. Args: id (str): user identifier to lookup Returns: SkypeContact: resulting contact object
def contact(self, id): try: json = self.skype.conn("POST", "{0}/users/batch/profiles".format(SkypeConnection.API_USER), json={"usernames": [id]}, auth=SkypeConnection.Auth.SkypeToken).json() contact = SkypeContact.fromRaw(self.skype, json[0]) if contact.id not in self.contactIds: self.contactIds.append(contact.id) return self.merge(contact) except SkypeApiException as e: if len(e.args) >= 2 and getattr(e.args[1], "status_code", None) == 403: # Not a contact, so no permission to retrieve information. return None raise
412,740
Retrieve public information about a user. Args: id (str): user identifier to lookup Returns: SkypeUser: resulting user object
def user(self, id): json = self.skype.conn("POST", "{0}/batch/profiles".format(SkypeConnection.API_PROFILE), auth=SkypeConnection.Auth.SkypeToken, json={"usernames": [id]}).json() if json and "status" not in json[0]: return self.merge(SkypeUser.fromRaw(self.skype, json[0])) else: return None
412,741
Retrieve a single bot. Args: id (str): UUID or username of the bot Returns: SkypeBotUser: resulting bot user object
def bot(self, id): json = self.skype.conn("GET", "{0}/agents".format(SkypeConnection.API_BOT), params={"agentId": id}, auth=SkypeConnection.Auth.SkypeToken).json().get("agentDescriptions", []) return self.merge(SkypeBotUser.fromRaw(self.skype, json[0])) if json else None
412,743
Search the Skype Directory for a user. Args: query (str): name to search for Returns: SkypeUser list: collection of possible results
def search(self, query): results = self.skype.conn("GET", SkypeConnection.API_DIRECTORY, auth=SkypeConnection.Auth.SkypeToken, params={"searchstring": query, "requestId": "0"}).json().get("results", []) return [SkypeUser.fromRaw(self.skype, json.get("nodeProfileData", {})) for json in results]
412,744
Instantiate a plain instance of this class, and store a reference to the Skype object for later API calls. Normally this method won't be called or implemented directly. Implementers should make use of :meth:`fromRaw` and the :meth:`initAttrs` decorator instead. Args: skype (Skype): parent Skype instance raw (dict): raw object, as provided by the API
def __init__(self, skype=None, raw=None): self.skype = skype self.raw = raw
412,746
Create a new instance based on the raw properties of an API response. This can be overridden to automatically create subclass instances based on the raw content. Args: skype (Skype): parent Skype instance raw (dict): raw object, as provided by the API Returns: SkypeObj: the new class instance
def fromRaw(cls, skype=None, raw={}): return cls(skype, raw, **cls.rawToFields(raw))
412,747
Copy properties from other into self, skipping ``None`` values. Also merges the raw data. Args: other (SkypeObj): second object to copy fields from
def merge(self, other): for attr in self.attrs: if not getattr(other, attr, None) is None: setattr(self, attr, getattr(other, attr)) if other.raw: if not self.raw: self.raw = {} self.raw.update(other.raw)
412,748
Create a new container object. The :attr:`synced` state and internal :attr:`cache` are initialised here. Args: skype (Skype): parent Skype instance
def __init__(self, skype=None): self.skype = skype self.synced = False self.cache = {}
412,751
Add a given object to the cache, or update an existing entry to include more fields. Args: obj (SkypeObj): object to add to the cache
def merge(self, obj): if obj.id in self.cache: self.cache[obj.id].merge(obj) else: self.cache[obj.id] = obj return self.cache[obj.id]
412,754
Create a new enumeration. The parent enum creates an instance for each item. Args: label (str): enum name names (list): item labels path (list): qualified parent name, for :func:`repr` output
def __init__(self, label, names=(), path=None): self.label = label self.names = names self.path = path for name in names: setattr(self, name, self.__class__(name, path="{0}.{1}".format(path, label) if path else label))
412,755
Method decorator: if a given status code is received, re-authenticate and try again. Args: codes (int list): status codes to respond to regToken (bool): whether to try retrieving a new token on error Returns: method: decorator function, ready to apply to other methods
def handle(*codes, **kwargs): regToken = kwargs.get("regToken", False) subscribe = kwargs.get("subscribe") def decorator(fn): @functools.wraps(fn) def wrapper(self, *args, **kwargs): try: return fn(self, *args, **kwargs) except SkypeApiException as e: if isinstance(e.args[1], requests.Response) and e.args[1].status_code in codes: conn = self if isinstance(self, SkypeConnection) else self.conn if regToken: conn.getRegToken() if subscribe: conn.endpoints[subscribe].subscribe() return fn(self, *args, **kwargs) raise return wrapper return decorator
412,761
Replace the stub :meth:`getSkypeToken` method with one that connects via the Microsoft account flow using the given credentials. Avoids storing the account password in an accessible way. Args: user (str): username or email address of the connecting account pwd (str): password of the connecting account
def setUserPwd(self, user, pwd): def getSkypeToken(self): self.liveLogin(user, pwd) self.getSkypeToken = MethodType(getSkypeToken, self)
412,767
Ensure the authentication token for the given auth method is still valid. Args: auth (Auth): authentication type to check Raises: .SkypeAuthException: if Skype auth is required, and the current token has expired and can't be renewed
def verifyToken(self, auth): if auth in (self.Auth.SkypeToken, self.Auth.Authorize): if "skype" not in self.tokenExpiry or datetime.now() >= self.tokenExpiry["skype"]: if not hasattr(self, "getSkypeToken"): raise SkypeAuthException("Skype token expired, and no password specified") self.getSkypeToken() elif auth == self.Auth.RegToken: if "reg" not in self.tokenExpiry or datetime.now() >= self.tokenExpiry["reg"]: self.getRegToken()
412,770
Query a username or email address to see if a corresponding Microsoft account exists. Args: user (str): username or email address of an account Returns: bool: whether the account exists
def checkUser(self, user): return not self.conn("POST", "{0}/GetCredentialType.srf".format(SkypeConnection.API_MSACC), json={"username": user}).json().get("IfExistsResult")
412,778
Take an existing Skype token and refresh it, to extend the expiry time without other credentials. Args: token (str): existing Skype token Returns: (str, datetime.datetime) tuple: Skype token, and associated expiry if known Raises: .SkypeAuthException: if the login request is rejected .SkypeApiException: if the login form can't be processed
def auth(self, token): t = self.sendToken(token) return self.getToken(t)
412,784
Create a new instance based on a newly-created endpoint identifier. Args: conn (SkypeConnection): parent connection instance id (str): endpoint identifier as generated by the API
def __init__(self, conn, id): super(SkypeEndpoint, self).__init__() self.conn = conn self.id = id self.subscribed = False
412,788
Configure this endpoint to allow setting presence. Args: name (str): display name for this endpoint
def config(self, name="skype"): self.conn("PUT", "{0}/users/ME/endpoints/{1}/presenceDocs/messagingService" .format(self.conn.msgsHost, self.id), auth=SkypeConnection.Auth.RegToken, json={"id": "messagingService", "type": "EndpointPresenceDoc", "selfLink": "uri", "privateInfo": {"epname": name}, "publicInfo": {"capabilities": "", "type": 1, "skypeNameVersion": "skype.com", "nodeInfo": "xx", "version": "908/1.30.0.128"}})
412,789
Send a keep-alive request for the endpoint. Args: timeout (int): maximum amount of time for the endpoint to stay active
def ping(self, timeout=12): self.conn("POST", "{0}/users/ME/endpoints/{1}/active".format(self.conn.msgsHost, self.id), auth=SkypeConnection.Auth.RegToken, json={"timeout": timeout})
412,790
Get a single conversation by identifier. Args: id (str): single or group chat identifier
def chat(self, id): json = self.skype.conn("GET", "{0}/users/ME/conversations/{1}".format(self.skype.conn.msgsHost, id), auth=SkypeConnection.Auth.RegToken, params={"view": "msnp24Equivalent"}).json() cls = SkypeSingleChat if "threadProperties" in json: info = self.skype.conn("GET", "{0}/threads/{1}".format(self.skype.conn.msgsHost, json.get("id")), auth=SkypeConnection.Auth.RegToken, params={"view": "msnp24Equivalent"}).json() json.update(info) cls = SkypeGroupChat return self.merge(cls.fromRaw(self.skype, json))
412,794
Create a new group chat with the given users. The current user is automatically added to the conversation as an admin. Any other admin identifiers must also be present in the member list. Args: members (str list): user identifiers to initially join the conversation admins (str list): user identifiers to gain admin privileges
def create(self, members=(), admins=()): memberObjs = [{"id": "8:{0}".format(self.skype.userId), "role": "Admin"}] for id in members: if id == self.skype.userId: continue memberObjs.append({"id": "8:{0}".format(id), "role": "Admin" if id in admins else "User"}) resp = self.skype.conn("POST", "{0}/threads".format(self.skype.conn.msgsHost), auth=SkypeConnection.Auth.RegToken, json={"members": memberObjs}) return self.chat(resp.headers["Location"].rsplit("/", 1)[1])
412,795
Resolve a ``join.skype.com`` URL and returns various identifiers for the group conversation. Args: url (str): public join URL, or identifier from it Returns: dict: related conversation's identifiers -- keys: ``id``, ``long``, ``blob``
def urlToIds(url): urlId = url.split("/")[-1] convUrl = "https://join.skype.com/api/v2/conversation/" json = SkypeConnection.externalCall("POST", convUrl, json={"shortId": urlId, "type": "wl"}).json() return {"id": json.get("Resource"), "long": json.get("Id"), "blob": json.get("ChatBlob")}
412,796
Extract the username from a contact URL. Matches addresses containing ``users/<user>`` or ``users/ME/contacts/<user>``. Args: url (str): Skype API URL Returns: str: extracted identifier
def userToId(url): match = re.search(r"users(/ME/contacts)?/[0-9]+:([^/]+)", url) return match.group(2) if match else None
412,797
Extract the conversation ID from a conversation URL. Matches addresses containing ``conversations/<chat>``. Args: url (str): Skype API URL Returns: str: extracted identifier
def chatToId(url): match = re.search(r"conversations/([0-9]+:[^/]+)", url) return match.group(1) if match else None
412,798
Class decorator: automatically generate an ``__init__`` method that expects args from cls.attrs and stores them. Args: cls (class): class to decorate Returns: class: same, but modified, class
def initAttrs(cls): def __init__(self, skype=None, raw=None, *args, **kwargs): super(cls, self).__init__(skype, raw) # Merge args into kwargs based on cls.attrs. for i in range(len(args)): kwargs[cls.attrs[i]] = args[i] # Disallow any unknown kwargs. unknown = set(kwargs) - set(cls.attrs) if unknown: unknownDesc = "an unexpected keyword argument" if len(unknown) == 1 else "unexpected keyword arguments" unknownList = ", ".join("'{0}'".format(k) for k in sorted(unknown)) raise TypeError("__init__() got {0} {1}".format(unknownDesc, unknownList)) # Set each attribute from kwargs, or use the default if not specified. for k in cls.attrs: setattr(self, k, kwargs.get(k, cls.defaults.get(k))) # Add the init method to the class. setattr(cls, "__init__", __init__) return cls
412,799
Class decorator: override __bool__ to set truthiness based on any attr being present. Args: cls (class): class to decorate Returns: class: same, but modified, class
def truthyAttrs(cls): def __bool__(self): return bool(any(getattr(self, attr) for attr in self.attrs)) cls.__bool__ = cls.__nonzero__ = __bool__ return cls
412,801
Method decorator: calculate the value on first access, produce the cached value thereafter. If the function takes arguments, the cache is a dictionary using all arguments as the key. Args: fn (method): function to decorate Returns: method: wrapper function with caching
def cacheResult(fn): cache = {} @functools.wraps(fn) def wrapper(*args, **kwargs): # Imperfect key generation (args may be passed as kwargs, so multiple ways to represent one key). key = args + tuple(kwargs.items()) # Order of operations here tries to minimise use of exceptions. try: # Don't call the function here, as it may throw a TypeError itself (or from incorrect arguments). if key in cache: return cache[key] except TypeError: # Key is not hashable, so we can't cache with these args -- just return the result. return fn(*args, **kwargs) # Not yet cached, so generate the result and store it. cache[key] = fn(*args, **kwargs) return cache[key] # Make cache accessible externally. wrapper.cache = cache return wrapper
412,802
Write code object as a byte-compiled file Arguments: codeobject: code object filefile: bytecode file to write timestamp: timestamp to put in file magic: Pyton bytecode magic
def dump_compile(codeobject, filename, timestamp, magic): # Atomically write the pyc/pyo file. Issue #13146. # id() is used to generate a pseudo-random filename. path_tmp = '%s.%s' % (filename, id(filename)) fc = None try: fc = open(path_tmp, 'wb') if PYTHON3: fc.write(bytes([0, 0, 0, 0])) else: fc.write('\0\0\0\0') wr_long(fc, timestamp) marshal.dump(codeobject, fc) fc.flush() fc.seek(0, 0) fc.write(magic) fc.close() os.rename(path_tmp, filename) except OSError: try: os.unlink(path_tmp) except OSError: pass raise finally: if fc: fc.close()
413,197
Parse a URL query string and return the components as a dictionary. Based on the cgi.parse_qs method.This is a utility function provided with urlparse so that users need not use cgi module for parsing the url query string. Arguments: :type url: str :param url: URL with query string to be parsed
def _urlparse_qs(url): # Extract the query part from the URL. querystring = urlparse(url)[4] # Split the query into name/value pairs. pairs = [s2 for s1 in querystring.split('&') for s2 in s1.split(';')] # Split the name/value pairs. result = OrderedDefaultDict(list) for name_value in pairs: pair = name_value.split('=', 1) if len(pair) != 2: continue if len(pair[1]) > 0: name = _unquote(pair[0].replace('+', ' ')) value = _unquote(pair[1].replace('+', ' ')) result[name].append(value) return result
413,503
BIP143 hashSequence implementation Args: sighash_type (int): SIGHASH_SINGLE or SIGHASH_ALL anyone_can_pay (bool): true if ANYONECANPAY should be set Returns: (bytes): the hashSequence, a 32 byte hash
def _hash_sequence(self, sighash_type, anyone_can_pay): if anyone_can_pay or sighash_type == shared.SIGHASH_SINGLE: # If any of ANYONECANPAY, SINGLE sighash type is set, # hashSequence is a uint256 of 0x0000......0000. return b'\x00' * 32 else: # hashSequence is the double SHA256 of nSequence of all inputs; sequences = ByteData() for tx_in in self.tx_ins: sequences += tx_in.sequence return utils.hash256(sequences.to_bytes())
414,030
Checks if the script code pased in to the sighash function is already length-prepended This will break if there's a redeem script that's just a pushdata That won't happen in practice Args: script (bytes): the spend script Returns: (bytes): the length-prepended script (if necessary)
def _adjusted_script_code(self, script): script_code = ByteData() if script[0] == len(script) - 1: return script script_code += VarInt(len(script)) script_code += script return script_code
414,031
BIP143 hashOutputs implementation Args: index (int): index of input being signed sighash_type (int): SIGHASH_SINGLE or SIGHASH_ALL Returns: (bytes): the hashOutputs, a 32 byte hash
def _hash_outputs(self, index, sighash_type): if sighash_type == shared.SIGHASH_ALL: # If the sighash type is ALL, # hashOutputs is the double SHA256 of all output amounts # paired up with their scriptPubKey; outputs = ByteData() for tx_out in self.tx_outs: outputs += tx_out.to_bytes() return utils.hash256(outputs.to_bytes()) elif (sighash_type == shared.SIGHASH_SINGLE and index < len(self.tx_outs)): # if sighash type is SINGLE # and the input index is smaller than the number of outputs, # hashOutputs is the double SHA256 of the output at the same index return utils.hash256(self.tx_outs[index].to_bytes()) else: # Otherwise, hashOutputs is a uint256 of 0x0000......0000 raise NotImplementedError( 'I refuse to implement the SIGHASH_SINGLE bug.')
414,032
Convert int to signed little endian (l.e.) hex for scripts Args: number (int): int value to convert to bytes in l.e. format Returns: (str): the hex-encoded signed LE number
def i2le_script(number): if number == 0: return '00' for i in range(80): try: return number.to_bytes( length=i, # minimal bytes lol byteorder='little', signed=True).hex() except Exception: continue
414,122
Construct a fully-signed segwit transaction Args: tx_ins list(TxIn instances): list of transaction inputs tx_outs list(TxOut instances): list of transaction outputs tx_witnesses list(TxWitness instances): list of transaction witnsses **kwargs: version (int): transaction version number locktime (hex): transaction locktime Returns: (Tx instance): signed transaction with witnesses
def witness_tx(tx_ins, tx_outs, tx_witnesses, **kwargs): # Parse legacy scripts AND witness scripts for OP_CLTV deser = [script_ser.deserialize(tx_in.redeem_script) for tx_in in tx_ins if tx_in is not None] for w in tx_witnesses: try: deser.append(script_ser.deserialize(w.stack[-1].item)) except (NotImplementedError, ValueError): pass version = max([guess_version(d) for d in deser]) if 'lock_time' in kwargs: lock_time = kwargs['lock_time'] else: lock_time = max([guess_locktime(d) for d in deser]) return tb.make_tx( version=version, tx_ins=tx_ins, tx_outs=tx_outs, lock_time=lock_time, tx_witnesses=tx_witnesses)
414,156
Prepares a set of setup, test, and teardown code to be run in the console. PARAMETERS: code -- list; processed lines of code. Elements in the list are either strings (input) or CodeAnswer objects (output) setup -- str; raw setup code teardown -- str; raw teardown code
def load(self, code, setup='', teardown=''): super().load(code, setup, teardown) self._frame = self._original_frame.copy()
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Unlocks the CodeCase. PARAMETERS: unique_id_prefix -- string; a prefix of a unique identifier for this Case, for purposes of analytics. case_id -- string; an identifier for this Case, for purposes of analytics. interact -- function; handles user interaction during the unlocking phase.
def unlock(self, unique_id_prefix, case_id, interact): print(self.setup.strip()) prompt_num = 0 current_prompt = [] try: for line in self.lines: if isinstance(line, str) and line: print(line) current_prompt.append(line) elif isinstance(line, CodeAnswer): prompt_num += 1 if not line.locked: print('\n'.join(line.output)) continue unique_id = self._construct_unique_id(unique_id_prefix, self.lines) line.output = interact(unique_id, case_id + ' > Prompt {}'.format(prompt_num), '\n'.join(current_prompt), line.output, line.choices) line.locked = False current_prompt = [] self.locked = False finally: self._sync_code()
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Splits the given string of code based on the provided PS1 and PS2 symbols. PARAMETERS: code -- str; lines of interpretable code, using PS1 and PS2 prompts PS1 -- str; first-level prompt symbol PS2 -- str; second-level prompt symbol RETURN: list; a processed sequence of lines corresponding to the input code.
def split_code(cls, code, PS1, PS2): processed_lines = [] for line in textwrap.dedent(code).splitlines(): if not line or line.startswith(PS1) or line.startswith(PS2): processed_lines.append(line) continue assert len(processed_lines) > 0, 'code improperly formatted: {}'.format(code) if not isinstance(processed_lines[-1], CodeAnswer): processed_lines.append(CodeAnswer()) processed_lines[-1].update(line) return processed_lines
415,183
Prepares a set of setup, test, and teardown code to be run in the console. PARAMETERS: code -- list; processed lines of code. Elements in the list are either strings (input) or CodeAnswer objects (output) setup -- str; raw setup code teardown -- str; raw teardown code
def load(self, code, setup='', teardown=''): self._setup = textwrap.dedent(setup).splitlines() self._code = code self._teardown = textwrap.dedent(teardown).splitlines()
415,187
Formats a Python-object into a string in a JSON like way, but uses triple quotes for multiline strings. PARAMETERS: json -- Python object that is serializable into json. indentation -- str; represents one level of indentation NOTES: All multiline strings are treated as raw strings. RETURNS: str; the formatted json-like string.
def prettyjson(json, indentation=' '): if isinstance(json, int) or isinstance(json, float): return str(json) elif isinstance(json, str): if '\n' in json: return 'r' return repr(json) elif isinstance(json, list): lst = [indent(prettyjson(el, indentation), indentation) for el in json] return '[\n' + ',\n'.join(lst) + '\n]' elif isinstance(json, dict): pairs = [] for k, v in sorted(json.items()): k = prettyjson(k, indentation) v = prettyjson(v, indentation) pairs.append(indent(k + ': ' + v, indentation)) return '{\n' + ',\n'.join(pairs) + '\n}' else: raise exceptions.SerializeException('Invalid json type: {}'.format(json))
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Returns the number of seconds since the UNIX epoch for the given datetime (dt). PARAMETERS: dt -- datetime
def unix_time(self, dt): epoch = datetime.utcfromtimestamp(0) delta = dt - epoch return int(delta.total_seconds())
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Dumps all tests, as determined by their .dump() method. PARAMETERS: tests -- dict; file -> Test. Each Test object has a .dump method that takes a filename and serializes the test object.
def dump_tests(self): log.info('Dumping tests') for test in self.test_map.values(): try: test.dump() except ex.SerializeException as e: log.warning('Unable to dump {}: {}'.format(test.name, str(e))) else: log.info('Dumped {}'.format(test.name))
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Constructor. PARAMETERS: args -- Namespace; parsed command line arguments by argparse. assignment -- dict; general information about the assignment.
def __init__(self, args, assignment): self.args = args self.assignment = assignment
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Constructor for a List field. PARAMETERS: type -- type; if type is None, the List can be heterogeneous. Otherwise, the List must be homogeneous with elements of the specified type.
def __init__(self, type=None, **kargs): super().__init__(**kargs) self._type = type
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