filecmp.clear_cache() Clear the filecmp cache. This may be useful if a file is compared so quickly after it is modified that it is within the mtime resolution of the underlying filesystem. New in version 3.4.

class xml.etree.ElementTree.TreeBuilder(element_factory=None) Generic element structure builder. This builder converts a sequence of start, data, and end method calls to a well-formed element structure. You can use this class to build an element structure using a custom XML parser, or a parser for some other XML-like format. element_factory, when given, must be a callable accepting two positional arguments: a tag and a dict of attributes. It is expected to return a new element instance. clo

class selectors.DefaultSelector The default selector class, using the most efficient implementation available on the current platform. This should be the default choice for most users.

readlines(hint=-1) Read and return a list of lines from the stream. hint can be specified to control the number of lines read: no more lines will be read if the total size (in bytes/characters) of all lines so far exceeds hint. Note that it’s already possible to iterate on file objects using for line in file: ... without calling file.readlines().

from_buffer_copy(source[, offset]) This method creates a ctypes instance, copying the buffer from the source object buffer which must be readable. The optional offset parameter specifies an offset into the source buffer in bytes; the default is zero. If the source buffer is not large enough a ValueError is raised.

get_info() Return a string containing the “info” for a message. This is useful for accessing and modifying “info” that is experimental (i.e., not a list of flags).

multiprocessing.connection.answer_challenge(connection, authkey) Receive a message, calculate the digest of the message using authkey as the key, and then send the digest back. If a welcome message is not received, then AuthenticationError is raised.

time.altzone The offset of the local DST timezone, in seconds west of UTC, if one is defined. This is negative if the local DST timezone is east of UTC (as in Western Europe, including the UK). Only use this if daylight is nonzero.

__iter__() values() Return an iterator over representations of all messages if called as itervalues() or __iter__() or return a list of such representations if called as values(). The messages are represented as instances of the appropriate format-specific Message subclass unless a custom message factory was specified when the Mailbox instance was initialized. Note The behavior of __iter__() is unlike that of dictionaries, which iterate over keys.

xml.etree.ElementTree.parse(source, parser=None) Parses an XML section into an element tree. source is a filename or file object containing XML data. parser is an optional parser instance. If not given, the standard XMLParser parser is used. Returns an ElementTree instance.