Document.createElement(tagName) Create and return a new element node. The element is not inserted into the document when it is created. You need to explicitly insert it with one of the other methods such as insertBefore() or appendChild().

set_current() Make this feature the current feature of msilib. New components are automatically added to the default feature, unless a feature is explicitly specified.

os.get_inheritable(fd) Get the “inheritable” flag of the specified file descriptor (a boolean).

check_output(want, got, optionflags) Return True iff the actual output from an example (got) matches the expected output (want). These strings are always considered to match if they are identical; but depending on what option flags the test runner is using, several non-exact match types are also possible. See section Option Flags for more information about option flags.

open(file, mode='r', buffering=-1, encoding=None, errors=None, newline=None, closefd=True, opener=None) Open file and return a corresponding file object. If the file cannot be opened, an OSError is raised. file is either a string or bytes object giving the pathname (absolute or relative to the current working directory) of the file to be opened or an integer file descriptor of the file to be wrapped. (If a file descriptor is given, it is closed when the returned I/O object is closed, unless

calendar.day_name An array that represents the days of the week in the current locale.

wsgiref.util.application_uri(environ) Similar to request_uri(), except that the PATH_INFO and QUERY_STRING variables are ignored. The result is the base URI of the application object addressed by the request.

class threading.local A class that represents thread-local data. For more details and extensive examples, see the documentation string of the _threading_local module.

apply_async(func[, args[, kwds[, callback[, error_callback]]]]) A variant of the apply() method which returns a result object. If callback is specified then it should be a callable which accepts a single argument. When the result becomes ready callback is applied to it, that is unless the call failed, in which case the error_callback is applied instead. If error_callback is specified then it should be a callable which accepts a single argument. If the target function fails, then the error_ca

cmath.isfinite(x) Return True if both the real and imaginary parts of x are finite, and False otherwise. New in version 3.2.