How can I fix this syntax error using WebDriverWait in Selenium Python

Question

I'm a beginner in learning python and have a problem with my code. It seems like a simple error but I cannot find a solution for this error.

Here's a code

import time
from selenium import webdriver

driver = webdriver.Chrome()
driver.get("https://www.google.co.jp/")
WebDriverWait(driver, 30).until(EC.presence_of_element_located((By.NAME, "q"))
search_box = driver.find_element_by_name('q')
search_box.send_keys('Selenium')

  File "<ipython-input-12-1cac2821f197>", line 4
    search_box = driver.find_element_by_name("q")
             ^
SyntaxError: invalid syntax

search_box.submit()


driver.implicitly_wait(10)
driver.find_element_by_link_text("Selenium - Web Browser Automation").click()
time.sleep(5)
driver.quit()

The problem is on line 6. I tried to run the code, but it says "search_box" is invalid syntax. Does anyone know the solution for this?

Post the entire traceback. We are used to spotting errors with the information it provides. — tdelaney, Jun 28 '20 at 07:19
`WebDriverWait(driver, 30).until(EC.presence_of_element_located((By.NAME, "q"))` Count the `(`s and `)`s. — Karl Knechtel, Jun 28 '20 at 07:20

score 1 · Answer 1 · answered Jun 28 '20 at 07:20

1

Syntax errors are frequently on the lines above, especially when those lines include parenthesis. A trick is to count opening and closing parens. If the result isn't zero, you've got a problem:

WebDriverWait(driver, 30).until(EC.presence_of_element_located((By.NAME, "q"))
             ^          ^      ^                              ^^            ^^
             1          0      1                              23            21

answered Jun 28 '20 at 07:20

tdelaney

73,364
6
83
116

thanks! I could fix my code, but then another problem happened. Its says "name 'WebDriverWait' is not defined" "WebDriverWait" is supposed to be one of python's syntax. isn't it? I don't understand. – Tatsuya Hori Jun 28 '20 at 08:19
Python has keywords like "for" and "if" and a few builtin objects like "open", but mostly you are dealing with functions and classes that need to be imported. `from selenium import webdriver` is a good example. I don't know selenium specifically or where "WebDriverWait" comes from. You'll need to go back to the tutorials that use it and look for the `import` statement. – tdelaney Jun 28 '20 at 08:24

score 0 · Answer 2 · answered Jun 28 '20 at 09:42

0

In this line:

WebDriverWait(driver, 30).until(EC.presence_of_element_located((By.NAME, "q"))

there is an closing bracket in the end missing. And WebDriverWait isn't imported yet:

from selenium.webdriver.support.ui import WebDriverWait

answered Jun 28 '20 at 09:42

mistrx

1
2

score 0 · Answer 3 · answered Jun 28 '20 at 18:22

You need to consider a couple of things as follows:

Once you induce WebDriverWait you don't have to use find_element_by_* again. So you can remove the line:
```
search_box = driver.find_element_by_name('q')
```
As you intent to interact with the element instead of presence_of_element_located() you need the expected_conditions of element_to_be_clickable().

Moreover, element_to_be_clickable() 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:

class element_to_be_clickable(object):
    """ An Expectation for checking an element is visible and enabled such that you can click it."""
    def __init__(self, locator):
        self.locator = locator

    def __call__(self, driver):
        element = visibility_of_element_located(self.locator)(driver)
        if element and element.is_enabled():
            return element
        else:
            return False

You can find a relevant discussion in init() takes 2 positional arguments but 3 were given using WebDriverWait and expected_conditions as element_to_be_clickable with Selenium Python

Solution

You can club up the required three(3) lines into a single line as follows:

WebDriverWait(driver, 10).until((EC.element_to_be_clickable(By.NAME, "q"))).send_keys('Selenium')

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

Thank you Debanjan! I totally forgot to add from selenium.webdriver.common.by import By from selenium.webdriver.support import expected_conditions as EC now my code works properly — Tatsuya Hori, Jun 29 '20 at 06:36

How can I fix this syntax error using WebDriverWait in Selenium Python

3 Answers3

Solution