bytes.isdigit() bytearray.isdigit() Return true if all bytes in the sequence are ASCII decimal digits and the sequence is not empty, false otherwise. ASCII decimal digits are those byte values in the sequence b'0123456789'. For example: >>> b'1234'.isdigit() True >>> b'1.23'.isdigit() False

iterencode(o) Encode the given object, o, and yield each string representation as available. For example: for chunk in json.JSONEncoder().iterencode(bigobject): mysocket.write(chunk)

class importlib.abc.ExecutionLoader An abstract base class which inherits from InspectLoader that, when implemented, helps a module to be executed as a script. The ABC represents an optional PEP 302 protocol. abstractmethod get_filename(fullname) An abstract method that is to return the value of __file__ for the specified module. If no path is available, ImportError is raised. If source code is available, then the method should return the path to the source file, regardless of whether a b

os.setgroups(groups) Set the list of supplemental group ids associated with the current process to groups. groups must be a sequence, and each element must be an integer identifying a group. This operation is typically available only to the superuser. Availability: Unix. Note On Mac OS X, the length of groups may not exceed the system-defined maximum number of effective group ids, typically 16. See the documentation for getgroups() for cases where it may not return the same group list set b

header_encode_lines(string, maxlengths) Header-encode a string by converting it first to bytes. This is similar to header_encode() except that the string is fit into maximum line lengths as given by the argument maxlengths, which must be an iterator: each element returned from this iterator will provide the next maximum line length.

map(style, query_opt=None, **kw) Query or sets dynamic values of the specified option(s) in style. Each key in kw is an option and each value should be a list or a tuple (usually) containing statespecs grouped in tuples, lists, or some other preference. A statespec is a compound of one or more states and then a value. An example may make it more understandable: import tkinter from tkinter import ttk root = tkinter.Tk() style = ttk.Style() style.map("C.TButton", foreground=[('pressed',

coroutine AbstractEventLoop.sock_connect(sock, address) Connect to a remote socket at address. Modeled after blocking socket.socket.connect() method. With SelectorEventLoop event loop, the socket sock must be non-blocking. This method is a coroutine. Changed in version 3.5.2: address no longer needs to be resolved. sock_connect will try to check if the address is already resolved by calling socket.inet_pton(). If not, AbstractEventLoop.getaddrinfo() will be used to resolve the address. Se

regex.fullmatch(string[, pos[, endpos]]) If the whole string matches this regular expression, return a corresponding match object. Return None if the string does not match the pattern; note that this is different from a zero-length match. The optional pos and endpos parameters have the same meaning as for the search() method. >>> pattern = re.compile("o[gh]") >>> pattern.fullmatch("dog") # No match as "o" is not at the start of "dog". >>> pattern.fullmatch("og

compare_networks(other) Compare this network to other. In this comparison only the network addresses are considered; host bits aren’t. Returns either -1, 0 or 1. >>> ip_network('192.0.2.1/32').compare_networks(ip_network('192.0.2.2/32')) -1 >>> ip_network('192.0.2.1/32').compare_networks(ip_network('192.0.2.0/32')) 1 >>> ip_network('192.0.2.1/32').compare_networks(ip_network('192.0.2.1/32')) 0

abstractmethod find_module(fullname, path=None) An abstact method for finding a loader for the specified module. Originally specified in PEP 302, this method was meant for use in sys.meta_path and in the path-based import subsystem. Changed in version 3.4: Returns None when called instead of raising NotImplementedError.