exception SyntaxWarning Base class for warnings about dubious syntax.

math.erfc(x) Return the complementary error function at x. The complementary error function is defined as 1.0 - erf(x). It is used for large values of x where a subtraction from one would cause a loss of significance. New in version 3.2.

__dir__() Mock objects limit the results of dir(some_mock) to useful results. For mocks with a spec this includes all the permitted attributes for the mock. See FILTER_DIR for what this filtering does, and how to switch it off.

min_mag(x, y) Compares the values numerically with their sign ignored.

exception configparser.InterpolationDepthError Exception raised when string interpolation cannot be completed because the number of iterations exceeds MAX_INTERPOLATION_DEPTH. Subclass of InterpolationError.

with_hostmask A string representation of the network, with the mask in host mask notation.

curses.panel.update_panels() Updates the virtual screen after changes in the panel stack. This does not call curses.doupdate(), so you’ll have to do this yourself.

dis.findlinestarts(code) This generator function uses the co_firstlineno and co_lnotab attributes of the code object code to find the offsets which are starts of lines in the source code. They are generated as (offset, lineno) pairs.

cgi.print_directory() Format the current directory in HTML.

@unittest.skip(reason) Unconditionally skip the decorated test. reason should describe why the test is being skipped.