Selenium webdriverwait:__ init __()需要2个参数(给定3个)

Question

给出错误

Traceback (most recent call last):
  File "p3.py", line 21, in <module>
    WebDriverWait(driver, timex).until(EC.presence_of_element_located(by, element))
TypeError: __init__() takes exactly 2 arguments (3 given)

我没有用过__init__()为什么会出现这个错误？

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
import time

chrome_path=r"C:\Users\Bhanwar\Desktop\New folder (2)\chromedriver.exe"
driver =webdriver.Chrome(chrome_path)
driver.get("https://priceraja.com/mobile/pricelist/samsung-mobile-price-list-in-india")
#driver.implicitly_wait(10)
i=0
timex = 5
by = By.ID
hook = "product-itmes-"  # The id of one item, they seems to be this plus 
                         # the number item that they are
button = '.loadmore'
while i<3:
    element_number = 25*i
    element=hook+str(element_number)# It looks like there are 25 items added each time, and starts at 25
    WebDriverWait(driver, timex).until(EC.presence_of_element_located(by, element))
    driver.find_element_by_css_selector(button).click()
    time.sleep(5)  # Makes the page wait for the element to change
    i+=1

Answer 1

presence_of_element_located()只接受一个参数,一个定位器,这是一个元组.您忘记(...)在通话中添加元组所需的括号:

WebDriverWait(driver, timex).until(
    EC.presence_of_element_located((by, element)))
#          these make this a tuple ^ and       ^