* typing: fix argument names of cast
* typing: use private _Alias class
For py37 and above, this is _GenericAlias, for py36 and below it's
_TypeAlias. I don't think we need to make typing.pyi definitions
correspond more precisely, but we should avoid leaking a
typing.TypeAlias class
- connect_accepted_socket isn't a member of AbstractEventLoop, only
BaseEventLoop
- fix types of arguments with defaults. some of these functions could
have their signatures improved with overloads to reduce false negatives
- correctly mark a positional-only argument
- remove abstractmethod from methods that don't have abstractmethod and
go unimplemented in practice
the `rfile` and `wfile` members are already implemented by
StreamRequestHandler. In addition to them several (undocumented)
class and instance variables exist according to
<https://github.com/python/cpython/blob/master/Lib/socketserver.py#L742>:
- `rbufsize`
- `wbufsize`
- `timeout`
- `disable_nagle_algorithm`
- `packet` and `socket` for datagrams
The already exist with Python 2.7
<https://github.com/python/cpython/blob/2.7/Lib/SocketServer.py#L677>
```mermaid
classDiagram
BaseRequestHandler <|-- DatagramRequestHandler
BaseRequestHandler <|-- StreamRequestHandler
StreamRequestHandler <|-- BaseHTTPRequestHandler
```
It doesn't actually have __call__, it does some descriptor stuff, but
this makes things work. _SingleDispatchCallable has a __call__ too,
which is what this mirrors.
Fixes#3898
NodeVisitor recurses over an AST tree. When encountering a node, it
checks if a method called `visit_{node.__class__.__name__}` exists, and
calls it if so, otherwise calls the generic visitor.
Add the possible methods to NodeVisitor. This is not exactly correct,
since the methods don't *actually* exist on NodeVisitor, e.g.
`NodeVisitor().visit_Module(...)` doesn't work. But it's nice for
subclasses to know which methods they can override and which type they
should have.
* Add macurl2path stub, types based on urllib
* Fix types, remove undocumented
The whole module is undocumented, no reason to just mention it on one call
* Module was removed in 3.7, stubtest shouldn't care about it
* Module was removed in 3.7, stubtest shouldn't care about it
