Selenium (browser.find_element(by=By.PARTIAL_LINK_TEXT) 错误

Question

I need to find a partial link button on the page and click on it. But it gives me an error.

Code:

button = browser.find_element(by=By.PARTIAL_LINK_TEXT('/watch')).click()

Link

Error:

button = browser.find_element(by=By.PARTIAL_LINK_TEXT('/watch')).click()
TypeError: 'str' object is not callable

Answer 1

There are 2 problems here:

1. Instead of

browser.find_element(by=By.PARTIAL_LINK_TEXT('/watch'))

it should be

browser.find_element(By.PARTIAL_LINK_TEXT('/watch'))

2. In case you want to click on that element on the same line you should not try to put the result to button object. Because browser.find_element(By.PARTIAL_LINK_TEXT('/watch')) returns an object of web element so you can click on it with .click() method. However .click() method itself returns void ie nothing. So your code can be

browser.find_element(By.PARTIAL_LINK_TEXT('/watch')).click()

or

button = browser.find_element(By.PARTIAL_LINK_TEXT('/watch'))
button.click()

Answer 2

This is the wrong way

button = browser.find_element(by=By.PARTIAL_LINK_TEXT('/watch')).click()

You should use this:

button = browser.find_element(By.PARTIAL_LINK_TEXT, "/watch")
button.click()

Also, If You see the method signature is

def find_element(self, by=By.ID, value=None):

It is expected to pass By then separate that with the actual locator.

Also, I would recommend having WebDriverWait (ExplicitWait) for this use case.

button = WebDriverWait(browser, 20).until(EC.element_to_be_clickable((By.PARTIAL_LINK_TEXT, "/watch")))
button.click()

You will have to import these as well.

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

Answer 3

You were close enough. The actual implementation is:

self.find_element(by=By.PARTIAL_LINK_TEXT, value=link_text)

So you need to pass two parameters,

• The by_ parameter :

   by=By.PARTIAL_LINK_TEXT

• The value :

   /watch

So your effective line of code will be:

browser.find_element(By.PARTIAL_LINK_TEXT, "/watch")

---

Finally, click() doesn't returns anything, so if to try to assign it to a variable, it will be always NULL . So it's better to avoid it.

So your working line of code will be:

browser.find_element(By.PARTIAL_LINK_TEXT, "/watch").clcik()

---

Ideally to invoke a click() you need to induce WebDriverWait for the element_to_be_clickable() and you can use either of the following Locator Strategy :

WebDriverWait(browser, 20).until(EC.element_to_be_clickable((By.PARTIAL_LINK_TEXT, "/watch"))).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