Fix parse errors

builtins/2.7/signal.pyi

@@ -51,7 +51,7 @@ _HANDLER = Union[Callable[[int, FrameType], None], int, None]
 def alarm(time: int) -> int: ...
 def getsignal(signalnum: int) -> _HANDLER: ...
 def pause() -> None: ...
-def setitimer(which: int, seconds: float, interval: float = None) -> Tuple[float, float]: ...
+def setitimer(which: int, seconds: float, interval: float = ...) -> Tuple[float, float]: ...
 def getitimer(which: int) -> Tuple[float, float]: ...
 def set_wakeup_fd(fd: int) -> int: ...
 def siginterrupt(signalnum: int, flag: bool) -> None:

builtins/2.7/thread.pyi

@@ -6,8 +6,8 @@ def _count() -> int: ...
 class error(Exception): ...
 
 class LockType:
-    def acquire(self, waitflag: int = None) -> bool: ...
-    def acquire_lock(self, waitflag: int = None) -> bool: ...
+    def acquire(self, waitflag: int = ...) -> bool: ...
+    def acquire_lock(self, waitflag: int = ...) -> bool: ...
     def release(self) -> None: ...
     def release_lock(self) -> None: ...
     def locked(self) -> bool: ...
@@ -21,8 +21,8 @@ class _local(object):
 class _localdummy(object):
     pass
 
-def start_new(function: Callable[..., Any], args: Any, kwargs: Any = None) -> int: ...
-def start_new_thread(function: Callable[..., Any], args: Any, kwargs: Any = None) -> int: ...
+def start_new(function: Callable[..., Any], args: Any, kwargs: Any = ...) -> int: ...
+def start_new_thread(function: Callable[..., Any], args: Any, kwargs: Any = ...) -> int: ...
 def interrupt_main() -> None: ...
 def exit() -> None:
     raise SystemExit()
@@ -30,4 +30,4 @@ def exit_thread() -> Any:
     raise SystemExit()
 def allocate_lock() -> LockType: ...
 def get_ident() -> int: ...
-def stack_size(size: int = None) -> int: ...
+def stack_size(size: int = ...) -> int: ...