python - __init__() takes 2 positional arguments but 3 were given trying to wait for an element using presence_of_element_located()

Question

The log throw me this :

element.until(EC.presence_of_element_located(By.XPATH("//*[@id='menu-item-9145']/a'")))
TypeError: 'str' object is not callable

Code trials:

class Descaro:
    def __init__(self, driver):
        self.driver = driver

    def Descaro(self):
        time.sleep(3)
        self.driver.find_element_by_xpath("//*[@id='splashModal']/a[1]").click()
        print("deberia estar en la pagina de fondo")
        element = WebDriverWait(self.driver, 10)
        element.until(EC.presence_of_element_located(By.XPATH("//*[@id='menu-item-9145']/a'")))
        element.click()

I already try this:

element.until(EC.presence_of_element_located(By.XPATH, '//*[@id="menu-item-9145"]/a''))) 

but doesn't work too , beacuse:

__init__() takes 2 positional arguments but 3 were given

Answer 1

You need to take care of a couple of things:

• presence_of_element_located() should be called within a tuple as it is not a function but a class, where the initializer expects just 1 argument beyond the implicit self
• presence_of_element_located() doesn't ensures that the element is interactable. Instead you need to use element_to_be_clickable()

---

Solution

You need to induce WebDriverWait for the element_to_be_clickable() and you can use the following Locator Strategy:

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//*[@id='menu-item-9145']/a"))).click()

Note: You have to add the following imports :

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

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Reference

You can find a couple of relevant detailed discussions in:

• init() takes 2 positional arguments but 3 were given using WebDriverWait and expected_conditions as element_to_be_clickable with Selenium Python