ipaddress.v4_int_to_packed(address) Represent an address as 4 packed bytes in network (big-endian) order. address is an integer representation of an IPv4 IP address. A ValueError is raised if the integer is negative or too large to be an IPv4 IP address. >>> ipaddress.ip_address(3221225985) IPv4Address('192.0.2.1') >>> ipaddress.v4_int_to_packed(3221225985) b'\xc0\x00\x02\x01'

quopri.decode(input, output, header=False) Decode the contents of the input file and write the resulting decoded binary data to the output file. input and output must be binary file objects. If the optional argument header is present and true, underscore will be decoded as space. This is used to decode “Q”-encoded headers as described in RFC 1522: “MIME (Multipurpose Internet Mail Extensions) Part Two: Message Header Extensions for Non-ASCII Text”.

class collections.OrderedDict([items]) Return an instance of a dict subclass, supporting the usual dict methods. An OrderedDict is a dict that remembers the order that keys were first inserted. If a new entry overwrites an existing entry, the original insertion position is left unchanged. Deleting an entry and reinserting it will move it to the end. New in version 3.1. popitem(last=True) The popitem() method for ordered dictionaries returns and removes a (key, value) pair. The pairs are

popitem(last=True) The popitem() method for ordered dictionaries returns and removes a (key, value) pair. The pairs are returned in LIFO order if last is true or FIFO order if false.

sys.__stdout__ sys.__stderr__ These objects contain the original values of stdin, stderr and stdout at the start of the program. They are used during finalization, and could be useful to print to the actual standard stream no matter if the sys.std* object has been redirected. It can also be used to restore the actual files to known working file objects in case they have been overwritten with a broken object. However, the preferred way to do this is to explicitly save the previous stream befor

skipTest(reason) Calling this during a test method or setUp() skips the current test. See Skipping tests and expected failures for more information. New in version 3.1.

ssl.PEM_cert_to_DER_cert(PEM_cert_string) Given a certificate as an ASCII PEM string, returns a DER-encoded sequence of bytes for that same certificate.

enum.unique() Enum class decorator that ensures only one name is bound to any one value.

unlock() Maildir mailboxes do not support (or require) locking, so these methods do nothing.

readinto1() In BytesIO, this is the same as readinto(). New in version 3.5.