python3版本使用weditor报错，解决方案

 1 ， 初始化 uiautomator2 <python -m uiautomator2 init>报错： ValueError: builtins.type size changed, may indicate binary incompatibility. Expected 880 from C header, got 864 from PyObject

　　

Traceback (most recent call last):
  File "D:Python38lib
unpy.py", line 183, in _run_module_as_main
    mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
  File "D:Python38lib
unpy.py", line 142, in _get_module_details
    return _get_module_details(pkg_main_name, error)
  File "D:Python38lib
unpy.py", line 109, in _get_module_details
    __import__(pkg_name)
  File "D:Python38libsite-packagesuiautomator2\__init__.py", line 46, in <module>
    from . import xpath
  File "D:Python38libsite-packagesuiautomator2xpath.py", line 31, in <module>
    from lxml import etree
  File "type.pxd", line 9, in init lxml.etree
ValueError: builtins.type size changed, may indicate binary incompatibility. Expected 880 from C header, got 864 from PyObject

使用

pip uninstall lxml

然后再次运行

python -m uiautomator2 init

初始化成功

2 ，启动weditor时，报错如下：

python -m weditor

Traceback (most recent call last):
  File "D:Python38lib
unpy.py", line 192, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "D:Python38lib
unpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "D:Python38libsite-packagesweditor\__main__.py", line 210, in <module>
    main()
  File "D:Python38libsite-packagesweditor\__main__.py", line 206, in main
    run_web(args.debug, args.port, open_browser, args.force_quit)
  File "D:Python38libsite-packagesweditor\__main__.py", line 152, in run_web
    application.listen(port)
  File "D:Python38libsite-packages	ornadoweb.py", line 2112, in listen
    server.listen(port, address)
  File "D:Python38libsite-packages	ornado	cpserver.py", line 152, in listen
    self.add_sockets(sockets)
  File "D:Python38libsite-packages	ornado	cpserver.py", line 165, in add_sockets
    self._handlers[sock.fileno()] = add_accept_handler(
  File "D:Python38libsite-packages	ornado
etutil.py", line 279, in add_accept_handler
    io_loop.add_handler(sock, accept_handler, IOLoop.READ)
  File "D:Python38libsite-packages	ornadoplatformasyncio.py", line 99, in add_handler
    self.asyncio_loop.add_reader(fd, self._handle_events, fd, IOLoop.READ)
  File "D:Python38libasyncioevents.py", line 498, in add_reader
    raise NotImplementedError

NotImplementedError

在文件夹快速搜索：asyncio.py，在该py中添加如下3行代码，然后重新运行python -m weditor即可

import sys

if sys.platform == 'win32':
　　asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())

如下所示：

import concurrent.futures
import functools

from threading import get_ident
from tornado.gen import convert_yielded
from tornado.ioloop import IOLoop, _Selectable

import asyncio

import typing
from typing import Any, TypeVar, Awaitable, Callable, Union, Optional



import sys

if sys.platform == 'win32':
    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())



if typing.TYPE_CHECKING:
    from typing import Set, Dict, Tuple  # noqa: F401

_T = TypeVar("_T")


class BaseAsyncIOLoop(IOLoop):
    def initialize(  # type: ignore
        self, asyncio_loop: asyncio.AbstractEventLoop, **kwargs: Any
    ) -> None:
        self.asyncio_loop = asyncio_loop
        # Maps fd to (fileobj, handler function) pair (as in IOLoop.add_handler)
......