from appium import webdriver
des_cap = {'platformName': 'android'}
driver = webdriver.Remote(command_executor='http://127.0.0.1:4723/wd/hub',
desired_capabilities=des_cap)
在pycharm中安装appium-python-client，版本不指定，此时是2.11.1
对应依赖selenium4.10.0
执行示例代码
测试通过
??? 所以博主你要表达啥
继续看下去
你根据指定版本安装appium-python-client为2.6，自动安装selenium4.10
执行示例代码
测试失败
提示如下
D:\Appium01\venv\Scripts\python.exe D:/Appium01/demo1.py
Traceback (most recent call last):
File "D:\Appium01\demo1.py", line 9, in <module>
driver = webdriver.Remote(command_executor='http://127.0.0.1:4723/wd/hub',
File "D:\Appium01\venv\lib\site-packages\appium\webdriver\webdriver.py", line 230, in __init__
super().__init__(
TypeError: WebDriver.__init__() got an unexpected keyword argument 'desired_capabilities'
通过先看报错
TypeError: WebDriver.__init__() got an unexpected keyword argument 'desired_capabilities'
主要版本信息:
报错行
driver = webdriver.Remote
Remote是个别名
from .webdriver import WebDriver as Remote
看WebDriver源码
class WebDriver(
webdriver.Remote,
ActionHelpers,
Activities,
Applications,
Clipboard,
Context,
Common,
DeviceTime,
Display,
ExecuteDriver,
ExecuteMobileCommand,
Gsm,
HardwareActions,
ImagesComparison,
IME,
Keyboard,
Location,
LogEvent,
Network,
Performance,
Power,
RemoteFS,
ScreenRecord,
Session,
Settings,
Sms,
SystemBars,
):
def __init__(
self,
command_executor: str = 'http://127.0.0.1:4444/wd/hub',
desired_capabilities: Optional[Dict] = None,
browser_profile: str = None,
proxy: str = None,
keep_alive: bool = True,
direct_connection: bool = True,
extensions: Optional[List['WebDriver']] = None,
strict_ssl: bool = True,
options: Union[AppiumOptions, List[AppiumOptions]] = None,
):
__init__中传递了desired_capabilities没有问题
继续分析堆栈
File "D:\Appium01\venv\lib\site-packages\appium\webdriver\webdriver.py", line 230, in __init__
super().__init__(
继续看WebDriver此处源码
super().__init__(
command_executor=AppiumConnection(command_executor, keep_alive=keep_alive),
desired_capabilities=desired_capabilities,
browser_profile=browser_profile,
proxy=proxy,
options=options,
)
这里也有desired_capabilities，为何报错了呢
请看WebDriver的继承webdriver.Remote
class WebDriver(BaseWebDriver):
_web_element_cls = WebElement
_shadowroot_cls = ShadowRoot
def __init__(
self,
command_executor="http://127.0.0.1:4444",
keep_alive=True,
file_detector=None,
options: Union[BaseOptions, List[BaseOptions]] = None,
) -> None:
到这里你发现了，这个__init__里面没有desired_capabilities
注意webdriver.Remote是隶属于selenium的，你此时的selenium是4.10，升级了，可能导致它remove了一些参数
这是默认组合，要知道selenium也是4.10了，为何没有报错呢？
其调用关系简单分析下
在Remote的__init__中，也支持desired_capabilities，但有如下信息
# TODO: Remove the deprecated arg
desired_capabilities: Optional[Dict] = None,
if desired_capabilities is not None:
warnings.warn(
'desired_capabilities argument is deprecated and will be removed in future versions. '
'Use options instead.',
DeprecationWarning,
)
关键的问题是在于，appium-python-client2.11.1中对父类__init__的调用是不携带desired_capabilities的
super().__init__(
command_executor=command_executor,
options=dst_options,
)
完整代码片段如下
class WebDriver(
webdriver.Remote,
ActionHelpers,
Activities,
Applications,
Clipboard,
Context,
Common,
DeviceTime,
Display,
ExecuteDriver,
ExecuteMobileCommand,
Gsm,
HardwareActions,
ImagesComparison,
IME,
Keyboard,
Location,
LogEvent,
Network,
Performance,
Power,
RemoteFS,
ScreenRecord,
Session,
Settings,
Sms,
SystemBars,
):
def __init__(
self,
command_executor: Union[str, AppiumConnection] = 'http://127.0.0.1:4444/wd/hub',
# TODO: Remove the deprecated arg
desired_capabilities: Optional[Dict] = None,
# TODO: Remove the deprecated arg
browser_profile: Union[str, None] = None,
# TODO: Remove the deprecated arg
proxy: Union[str, None] = None,
keep_alive: bool = True,
direct_connection: bool = True,
extensions: Optional[List['WebDriver']] = None,
strict_ssl: bool = True,
options: Union[AppiumOptions, List[AppiumOptions], None] = None,
):
if strict_ssl is False:
# pylint: disable=E1101
# noinspection PyPackageRequirements
import urllib3
# pylint: disable=E1101
# noinspection PyPackageRequirements
import urllib3.exceptions
# noinspection PyUnresolvedReferences
AppiumConnection.set_certificate_bundle_path(None)
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
if isinstance(command_executor, str):
command_executor = AppiumConnection(command_executor, keep_alive=keep_alive)
if browser_profile is not None:
warnings.warn('browser_profile argument is deprecated and has no effect', DeprecationWarning)
if proxy is not None:
warnings.warn('proxy argument is deprecated and has no effect', DeprecationWarning)
if desired_capabilities is not None:
warnings.warn(
'desired_capabilities argument is deprecated and will be removed in future versions. '
'Use options instead.',
DeprecationWarning,
)
# TODO: Remove the fallback after desired_capabilities removal
dst_options = (
AppiumOptions().load_capabilities(desired_capabilities)
if desired_capabilities is not None and options is None
else options
)
super().__init__(
command_executor=command_executor,
options=dst_options,
)
想必分析到此处，你应该盲猜能知道为何这个也PASS了
是因为selenium的版本中webdriver.Remote中是有desired_capabilities的
class WebDriver(BaseWebDriver):
_web_element_cls = WebElement
_shadowroot_cls = ShadowRoot
def __init__(self, command_executor='http://127.0.0.1:4444',
desired_capabilities=None, browser_profile=None, proxy=None,
keep_alive=True, file_detector=None, options: Union[BaseOptions, List[BaseOptions]] = None):
from appium import webdriver
from appium.options.common import AppiumOptions
option = AppiumOptions()
option.set_capability('platformName','android')
driver = webdriver.Remote(command_executor='http://127.0.0.1:4723/wd/hub',
options=option)