Python 为什么通过采用3个位置参数的xpath（）查找元素？

*args以元组形式解包定位器。但在我的例子中，我只给出了两个参数，但它包含三个参数。需要帮助才能理解

我是使用python开发selenium的新手，并在github中使用了一些代码， 但这是一个错误

TypeError:

find\u element\u by\u xpath（）

接受2个位置参数，但给出了3个

locator.py
from selenium.webdriver.common.by import By
class elements(object):
      Customer = (By.XPATH, "//button[contains(text(),'Customer')]")


base.py
from selenium import webdriver
from selenium.webdriver.common.by import By

class Page(object):
    def __init__(self,driver,url=None):
        self.url = url
        self.driver = driver

    def find_element_with_click(self,*locator):
        self.driver.find_element_by_xpath(*locator).click()


pages.py
from selenium import webdriver
from base import Page
from locator import *

class CustomerCreation(Page):
    def __init__(self, driver):
        self.locator = elements
        super().__init__(driver)

    def create_customer(self):
        self.driver.find_element_with_click(*self.locator.Customer)


testPages.py
import unittest
from selenium import webdriver
from pages import *
from locators import *
from selenium.webdriver.common.by import By

class TestPages(unittest.TestCase):

    @classmethod
    def setUpClass(cls):
        cls.driver = webdriver.Chrome('C:\ChromeDriver\chromedriver')
        cls.driver.get("#server")


    def test_tes_cust(self):
        page = CustomerCreation(self.driver)
        res_page = page.create_customer()          #Getting issue at this stage

    @classmethod
    def tearDownClass(cls):
        cls.driver.close()


if __name__ == "__main__":
    suite = unittest.TestLoader().loadTestsFromTestCase(TestPages)
    unittest.TextTestRunner(verbosity=2).run(suite)

错误日志：

测试用户（main.TestPages）。。。错误 ====================================================================== 错误：测试用户（main.TestPages） ---------------------------------------------------------------------- 回溯（最近一次呼叫最后一次）： test_tes_cust中第28行的文件“testPages.py” res_page=page.create_customer（） 文件“C:\Users####\PycharmProjects\basics\pages.py”，第35行，在创建客户 self.find_元素，单击（*self.locator.Customer） 文件“C:\Users####\PycharmProjects\basics\base.py”，第21行，在find_元素中单击 self.driver.find\u元素\u by_xpath（*locator）。单击（） TypeError:find_element_by_xpath（）接受2个位置参数，但给出了3个

locator.py
from selenium.webdriver.common.by import By
class elements(object):
      Customer = (By.XPATH, "//button[contains(text(),'Customer')]")


base.py
from selenium import webdriver
from selenium.webdriver.common.by import By

class Page(object):
    def __init__(self,driver,url=None):
        self.url = url
        self.driver = driver

    def find_element_with_click(self,*locator):
        self.driver.find_element_by_xpath(*locator).click()


pages.py
from selenium import webdriver
from base import Page
from locator import *

class CustomerCreation(Page):
    def __init__(self, driver):
        self.locator = elements
        super().__init__(driver)

    def create_customer(self):
        self.driver.find_element_with_click(*self.locator.Customer)


testPages.py
import unittest
from selenium import webdriver
from pages import *
from locators import *
from selenium.webdriver.common.by import By

class TestPages(unittest.TestCase):

    @classmethod
    def setUpClass(cls):
        cls.driver = webdriver.Chrome('C:\ChromeDriver\chromedriver')
        cls.driver.get("#server")


    def test_tes_cust(self):
        page = CustomerCreation(self.driver)
        res_page = page.create_customer()          #Getting issue at this stage

    @classmethod
    def tearDownClass(cls):
        cls.driver.close()


if __name__ == "__main__":
    suite = unittest.TestLoader().loadTestsFromTestCase(TestPages)
    unittest.TextTestRunner(verbosity=2).run(suite)

---

你通过了一个额外的论点。你的论点是：

self

By.XPATH

“//按钮[包含（text（），'Customer'）]”

这就是您需要传递给

find\u element

方法的内容。而

find\u element\u by\u xpath

应该只接受两个参数：

self

“//按钮[包含（text（），'Customer'）]”

因此，请尝试将代码更新为

def find_element_with_click(self,*locator):
    self.driver.find_element(*locator).click()

或者您需要将

客户

修改为：

Customer = "//button[contains(text(),'Customer')]"

及