doctest.register_optionflag(name) Create a new option flag with a given name, and return the new flag’s integer value.

re.escape(string) Escape all the characters in pattern except ASCII letters, numbers and '_'. This is useful if

winreg.EnableReflectionKey(key) Restores registry reflection for the specified disabled key. key

peek(n) Read n uncompressed bytes without advancing the file position. At most one single read on the compressed stream

curses.halfdelay(tenths) Used for half-delay mode, which is similar to cbreak mode in that characters typed by the user are

_flush() Force buffered data to be transmitted to the client. It’s okay if this method is a no-op (i.e., if _write()

_length_ A positive integer specifying the number of elements in the array. Out-of-range subscripts result in an

make_mixed(boundary=None) Convert a non-multipart, a multipart/related, or a multipart-alternative

binascii.b2a_hqx(data) Perform hexbin4 binary-to-ASCII translation and return the resulting string. The argument should already

class typing.Union Union type; Union[X, Y] means either X or Y. To define a union