使用Uiautomator语法定位元素时，报错此元素不是一个字符串 is not a string 【已解决】

import time
from appium import webdriver

des = {
    "platformName": "Android",
    "platformVersion": "8.1.0",
    "deviceName": "vivo x20",
    "appPackage": "com.ibox.calculators",
    "appActivity": "com.ibox.calculators.CalculatorActivity",
    "udid": "c6c8c4ce",
    "noReset": True,
    "unicodeKeyboard": True,
    "resetKeyboard": True,
}

driver = webdriver.Remote('http://127.0.0.1:4723/wd/hub', des)

driver.find_element_by_android_uiautomator("text('9')").click()

Traceback (most recent call last):
  File "C:/Users/admin/PycharmProjects/Appiunm_UI/adb_demo1/demo_04hunhe.py", line 27, in <module>
    driver.find_element_by_android_uiautomator("text('9')").click()
  File "C:UsersadminAppDataLocalProgramsPythonPython37-32libsite-packagesappiumwebdriverextensionssearch_contextandroid.py", line 147, in find_element_by_android_uiautomator
    return self.find_element(by=MobileBy.ANDROID_UIAUTOMATOR, value=uia_string)
  File "C:UsersadminAppDataLocalProgramsPythonPython37-32libsite-packagesappiumwebdriverwebdriver.py", line 283, in find_element
    return self.execute(RemoteCommand.FIND_ELEMENT, {'using': by, 'value': value})['value']
  File "C:UsersadminAppDataLocalProgramsPythonPython37-32libsite-packagesseleniumwebdriver
emotewebdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "C:UsersadminAppDataLocalProgramsPythonPython37-32libsite-packagesappiumwebdrivererrorhandler.py", line 31, in check_response
    raise wde
  File "C:UsersadminAppDataLocalProgramsPythonPython37-32libsite-packagesappiumwebdrivererrorhandler.py", line 26, in check_response
    super().check_response(response)
  File "C:UsersadminAppDataLocalProgramsPythonPython37-32libsite-packagesseleniumwebdriver
emoteerrorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.InvalidSelectorException: Message: Could not parse selector expression `new UiSelector().text('9')`: `UiSelector` doesn't have suitable method `text` with arguments ['9']: Could not parse selector expression `new UiSelector().text('9')`: '9' is not a string

后来查阅资料发现

需要将里面的括号变成双引号，外面的括号变成单引号才能进行识别

import time
from appium import webdriver

des = {
    "platformName": "Android",
    "platformVersion": "8.1.0",
    "deviceName": "vivo x20",
    "appPackage": "com.ibox.calculators",
    "appActivity": "com.ibox.calculators.CalculatorActivity",
    "udid": "c6c8c4ce",
    "noReset": True,
    "unicodeKeyboard": True,
    "resetKeyboard": True,
}

driver = webdriver.Remote('http://127.0.0.1:4723/wd/hub', des)

# 单双引号惹的祸 
driver.find_element_by_android_uiautomator("text('9')").click()

https://blog.csdn.net/qq544649790/article/details/83960311?ops_request_misc=&request_id=&biz_id=102&utm_term=UiSelector%20%E6%89%A7%E8%A1%8Cnew%20UiSelector().&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default-6-83960311.first_rank_v2_pc_rank_v29&spm=1018.2226.3001.4187