--- /dev/null
+# Stubs for pty (Python 2 and 3)\r
+import sys\r
+from typing import Callable, Iterable, Tuple, Union\r
+\r
+_Reader = Callable[[int], bytes]\r
+\r
+STDIN_FILENO: int\r
+STDOUT_FILENO: int\r
+STDERR_FILENO: int\r
+\r
+CHILD: int\r
+\r
+def openpty() -> Tuple[int, int]: ...\r
+def master_open() -> Tuple[int, str]: ...\r
+def slave_open(tty_name: str) -> int: ...\r
+def fork() -> Tuple[int, int]: ...\r
+if sys.version_info >= (3, 4):\r
+ def spawn(argv: Union[str, Iterable[str]], master_read: _Reader = ..., stdin_read: _Reader = ...) -> int: ...\r
+else:\r
+ def spawn(argv: Union[str, Iterable[str]], master_read: _Reader = ..., stdin_read: _Reader = ...) -> None: ...\r