add(elem) Add element elem to the set.

BaseHandler.default_open(req) This method is not defined in BaseHandler, but subclasses should define it if they want to catch all URLs. This method, if implemented, will be called by the parent OpenerDirector. It should return a file-like object as described in the return value of the open() of OpenerDirector, or None. It should raise URLError, unless a truly exceptional thing happens (for example, MemoryError should not be mapped to URLError). This method will be called before any protocol

Node.unlink() Break internal references within the DOM so that it will be garbage collected on versions of Python without cyclic GC. Even when cyclic GC is available, using this can make large amounts of memory available sooner, so calling this on DOM objects as soon as they are no longer needed is good practice. This only needs to be called on the Document object, but may be called on child nodes to discard children of that node. You can avoid calling this method explicitly by using the wit

Element.setAttributeNode(newAttr) Add a new attribute node to the element, replacing an existing attribute if necessary if the name attribute matches. If a replacement occurs, the old attribute node will be returned. If newAttr is already in use, InuseAttributeErr will be raised.

codecs.iterdecode(iterator, encoding, errors='strict', **kwargs) Uses an incremental decoder to iteratively decode the input provided by iterator. This function is a generator. The errors argument (as well as any other keyword argument) is passed through to the incremental decoder.

class ctypes.Structure(*args, **kw) Abstract base class for structures in native byte order. Concrete structure and union types must be created by subclassing one of these types, and at least define a _fields_ class variable. ctypes will create descriptors which allow reading and writing the fields by direct attribute accesses. These are the _fields_ A sequence defining the structure fields. The items must be 2-tuples or 3-tuples. The first item is the name of the field, the second item s

doctest.debug(module, name, pm=False) Debug the doctests for an object. The module and name arguments are the same as for function testsource() above. The synthesized Python script for the named object’s docstring is written to a temporary file, and then that file is run under the control of the Python debugger, pdb. A shallow copy of module.__dict__ is used for both local and global execution context. Optional argument pm controls whether post-mortem debugging is used. If pm has a true valu

configparser.SECTCRE A compiled regular expression used to parse section headers. The default matches [section] to the name "section". Whitespace is considered part of the section name, thus [  larch  ] will be read as a section of name "  larch  ". Override this attribute if that’s unsuitable. For example: >>> config = """ ... [Section 1] ... option = value ... ... [ Section 2 ] ... another = val ... """ >>> typical = ConfigParser() >>> typical.read_string(confi

os.makedirs(name, mode=0o777, exist_ok=False) Recursive directory creation function. Like mkdir(), but makes all intermediate-level directories needed to contain the leaf directory. The mode parameter is passed to mkdir(); see the mkdir() description for how it is interpreted. If exist_ok is False (the default), an OSError is raised if the target directory already exists. Note makedirs() will become confused if the path elements to create include pardir (eg. ”..” on UNIX systems). This fun

fold_binary(name, value) Headers are folded using the Header folding algorithm, which preserves existing line breaks in the value, and wraps each resulting line to the max_line_length. If cte_type is 7bit, non-ascii binary data is CTE encoded using the unknown-8bit charset. Otherwise the original source header is used, with its existing line breaks and any (RFC invalid) binary data it may contain.