Node.replaceChild(newChild, oldChild) Replace an existing node with a new node. It must be the case that oldChild is a child of this node; if not, ValueError is raised.

str.upper() Return a copy of the string with all the cased characters [4] converted to uppercase. Note that str.upper().isupper() might be False if s contains uncased characters or if the Unicode category of the resulting character(s) is not “Lu” (Letter, uppercase), but e.g. “Lt” (Letter, titlecase). The uppercasing algorithm used is described in section 3.13 of the Unicode Standard.

gc.get_objects() Returns a list of all objects tracked by the collector, excluding the list returned.

FTP.getwelcome() Return the welcome message sent by the server in reply to the initial connection. (This message sometimes contains disclaimers or help information that may be relevant to the user.)

math.nan A floating-point “not a number” (NaN) value. Equivalent to the output of float('nan'). New in version 3.5.

IMAP4.recent() Prompt server for an update. Returned data is None if no new messages, else value of RECENT response.

Template.append(cmd, kind) Append a new action at the end. The cmd variable must be a valid bourne shell command. The kind variable consists of two letters. The first letter can be either of '-' (which means the command reads its standard input), 'f' (which means the commands reads a given file on the command line) or '.' (which means the commands reads no input, and hence must be first.) Similarly, the second letter can be either of '-' (which means the command writes to standard output), '

path The path to the bytecode file.

common_dirs Subdirectories in both a and b.

headers Holds an instance of the class specified by the MessageClass class variable. This instance parses and manages the headers in the HTTP request. The parse_headers() function from http.client is used to parse the headers and it requires that the HTTP request provide a valid RFC 2822 style header.