Use float instead of Union[int, float] (#2308)

stdlib/2/_ast.pyi

@@ -1,5 +1,5 @@
 import typing
-from typing import Optional, Union
+from typing import Optional
 
 __version__ = ...  # type: str
 
@@ -215,7 +215,7 @@ class Repr(expr):
     value = ...  # type: expr
 
 class Num(expr):
-    n = ...  # type: Union[int, float]
+    n = ...  # type: float
 
 class Str(expr):
     s = ...  # type: str

stdlib/3/_ast.pyi

@@ -1,6 +1,6 @@
 import sys
 import typing
-from typing import Any, Optional, Union, ClassVar
+from typing import Any, Optional, ClassVar
 
 PyCF_ONLY_AST = ...  # type: int
 
@@ -233,7 +233,7 @@ class Call(expr):
     keywords = ...  # type: typing.List[keyword]
 
 class Num(expr):
-    n = ...  # type: Union[int, float]
+    n = ...  # type: float
 
 class Str(expr):
     s = ...  # type: str

stdlib/3/asyncio/events.pyi

@@ -66,7 +66,7 @@ class AbstractEventLoop(metaclass=ABCMeta):
     @abstractmethod
     def call_soon(self, callback: Callable[..., Any], *args: Any) -> Handle: ...
     @abstractmethod
-    def call_later(self, delay: Union[int, float], callback: Callable[..., Any], *args: Any) -> Handle: ...
+    def call_later(self, delay: float, callback: Callable[..., Any], *args: Any) -> Handle: ...
     @abstractmethod
     def call_at(self, when: float, callback: Callable[..., Any], *args: Any) -> Handle: ...
     @abstractmethod

stdlib/3/importlib/abc.pyi

@@ -46,7 +46,7 @@ class ExecutionLoader(InspectLoader):
     def get_code(self, fullname: str) -> Optional[types.CodeType]: ...
 
 class SourceLoader(ResourceLoader, ExecutionLoader, metaclass=ABCMeta):
-    def path_mtime(self, path: _Path) -> Union[int, float]: ...
+    def path_mtime(self, path: _Path) -> float: ...
     def set_data(self, path: _Path, data: bytes) -> None: ...
     def get_source(self, fullname: str) -> Optional[str]: ...
     def path_stats(self, path: _Path) -> Mapping[str, Any]: ...

third_party/3/typed_ast/ast3.pyi

@@ -260,7 +260,7 @@ class Call(expr):
     keywords = ...  # type: typing.List[keyword]
 
 class Num(expr):
-    n = ...  # type: Union[int, float]
+    n = ...  # type: float
 
 class Str(expr):
     s = ...  # type: str