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Selenium findElement(By.CSS_SELECTOR)

I have this button on the page:
<button type="submit" class="sc-pjTqr dzmlqP">Continue</button>`
I checked the documentation and StackOverflow answers and it seems to me that the solution should be:
continue = driver.find_element(By.CSS_SELECTOR,"button.sc-pjTqr.dzmlqP")
But does not work.
I searched for solutions, but I didn't understand. Why?

The classnames i.e. sc-pjTqr, dzmlqP are dynamically generated and is bound to chage sooner/later. They may change next time you access the application afresh or even while next application startup. So can't be used in locators.
Solution
To identify the element with text as Continue you can use the following locator strategy:
Using xpath:
continue = driver.find_element(By.XPATH, "//button[text()='Continue']")
Ideally to identify the clickable element you need to induce WebDriverWait for the element_to_be_clickable() and you can use the following locator strategy:
Using XPATH:
continue = WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//button[text()='Continue']")))
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

The OP doesn't confirm the url where this button lives, so I can test the solution:
button = WebDriverWait(browser, 20).until(EC.element_to_be_clickable((By.CLASS_NAME, "sc-pjTqr")))
There are other ways as well.

How do I make Selenium Python click on a button element?

So I just started using Selenium for Python and I am trying to click on a button element that is buried into a few div elements; I've tried so many things but nothing works. Everything in the code works besides the last part which is waiting for the button to be clickable and then clicking it. I would greatly appreciate some help here, thanks. :)
HTML:
Code trials:
Error stacktrace:

To click on **Maybe Later** button.
Induce WebDriverWait() and element_to_be_clickable() and following XPATH or CSS Selector.
XPATH:
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//div[#class='modal-footer']//button[#Class='btn btn-danger x' and text()='Maybe Later']"))).click()
CSS Selector:
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.CSS_SELECTOR,"div.modal-footer button.btn.btn-danger.x[style='danger']"))).click()
You need to import following libraries.
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

css selectors will become your best friend,
you should always look to add as many attributes as possible
maybe_later_css = 'button[class="btn btn-danger"]'
# type str, '<tag-name>[<attribute-name> = <attribute-value>]'
driver.find_element_by_css_selector(maybe_later_css).click()
follow this format for all elements, its superior and works as expected every time
the only complication is when there exists multiple buttons with them same class name, in which case you should find a different attribute to fill the [] brackets

The element with text as Maybe Later is within a Modal Dialog Box so to locate and click() on the element you have to induce WebDriverWait for the element_to_be_clickable() and you can use either of the following Locator Strategies:
Using CSS_SELECTOR:
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "div.modal-footer#eFooter button.btn.btn-danger.x[style='danger']"))).click()
Using XPATH:
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//div[#class='modal-footer' and #id='eFooter']//button[#class='btn btn-danger x' and #style='danger']"))).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

Python Selenium find element by xpath or by id issue

I am trying to enter text into a text box on a web page but I am unable to locate it. I've tried finding it by xpath using the placeholder but may have had the wrong syntax as it was throwing an error.
The error I get with the below python is element not interactable - but it's a text field? surely it's intractable?
HTML:
<div class="name-filter-input"> == $0
<input placeholder="Search" ng-model="filter"
class="ng-pristine ng-valid">
</div>
My Python:
browser.find_element_by_class_name('name-filter-input')
campaign_text_field = browser.find_element_by_class_name('name-filter-input')
campaign_text_field.send_keys(x)

It seems you are trying to interact with the division instead of the input field.
Could you try changing the class name as so:
campaign_text_field = browser.find_element_by_class_name('ng-pristine ng-valid')

Use CSS Selector for the input element.
campaign_text_field = browser.find_element_by_css_selector('input.ng-pristine.ng-valid')
campaign_text_field.send_keys("XXX")
For the best practice induce WebDriverWait() and wait for element_to_be_clickable()
WebDriverWait(browser,20).until(EC.element_to_be_clickable((By.CSS_SELECTOR,'input.ng-pristine.ng-valid'))).send_keys("XXX")
Add following libraries.
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By

Python Selenium: Having trouble fixing NoSuchElementException for a specific button

I'm trying to press a button with selenium in python. I am not able to locate it with xpath or css selector.
For the rest of the things in the script I have been using xpath and it works fine, but this button's xpath seems to be relative each time I open it. Therefore I have tried to access is with the css selector.
The element I am trying to access looks like this:
<button type="button" data-dismiss="modal" class="btn btn-primary pull-right">Opret AnnonceAgent</button>
The css selector from inspect in chrome:
#\35 d167939-adc2-0901-34ea-406e6c26e1ab > div.modal-footer > div > button.btn.btn-primary.pull-right
Let me know if I should post more html.
I have tried many stack oveflow questions, and tried many variatiosn of the css selector, like putting it as:
driver.find_element_by_class_name('#\35 d167939-adc2-0901-34ea-406e6c26e1ab.div.modal-footer.div.button.btn.btn-primary.pull-rightdiv.button.btn.btn-primary-pull-right').click()
driver.find_element_by_class_name('div.button.btn.btn-primary-pull-right').click()
driver.find_element_by_class_name('button.btn.btn-primary-pull-right').click()
driver.find_element_by_class_name('btn.btn-primary-pull-right').click()
driver.find_element_by_class_name('btn-primary-pull-right').click()
I have also tried a sleep timer.
The button is in a window that opens when you press the previous button, with the background greyed out, if that helps. Picture.
# This opens up the window in which to press the next button (works fine)
button = driver.find_element_by_xpath('//*[#id="content"]/div[1]/section/div[2]/button')
button.click()
driver.implicitly_wait(15)
time.sleep(5)
# This is what doesn't work
driver.find_element_by_class_name('button.btn.btn-primary-pull-right').click()
I expect for the program to press the button and it doesn't, it just sits there.

The desired element is within a Modal Dialog Box, so you need to induce WebDriverWait for the desired element to be clickable and you can use either of the following Locator Strategies:
Using CSS_SELECTOR:
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "button.btn.btn-primary.pull-right[data-dismiss='modal']"))).click()
Using XPATH:
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//button[#class='btn btn-primary pull-right' and #data-dismiss='modal'][text()='Opret AnnonceAgent']"))).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

class_name recives one class as parameter, but you are using css syntax as locator.
With css_selector
driver.find_element_by_css_selector('button.btn.btn-primary-pull-right')
Which means <button> tag with 2 classes, btn and btn-primary-pull-right
With class_name
driver.find_element_by_class_name('btn-primary-pull-right')

My guess was right.There was an iframe which stopping to access the element.You have to switch to iframe first to access the button element.Try now with following code.
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions
#WebDriverWait(driver,20).until(expected_conditions.frame_to_be_available_and_switch_to_it((By.XPATH,'//iframe[starts-with(#id,"rdr_")]')))
WebDriverWait(driver,20).until(expected_conditions.frame_to_be_available_and_switch_to_it((By.XPATH,'//iframe[#id="qualaroo_dnt_frame"]')))
driver.find_element_by_css_selector('button.btn.btn-primary').click()

How to click on the button when the textContext contains leading and trailing white-space characters?

I'm trying to click on the following button using Selenium with python:
<button type="submit" tabindex="4" id="sbmt" name="_eventId_proceed">
Einloggen
</button>
This is just a simple button which looks like this:
Code:
driver.find_element_by_id('sbmt').click()
This results in the following exception:
selenium.common.exceptions.ElementNotInteractableException: Message:
Element <button id="sbmt" name="_eventId_proceed" type="submit">
could not be scrolledinto view
So, I tried scrolling to the element using ActionChains(driver).move_to_element(driver.find_elements_by_id('sbmt')[1]).perform() before clicking the button.
(Accessing the second element with [1] because the first would result in selenium.common.exceptions.WebDriverException: Message: TypeError: rect is undefined exception.).
Then I used
wait = WebDriverWait(driver, 5)
submit_btn = wait.until(EC.element_to_be_clickable((By.ID, 'sbmt')))
in order to wait for the button to be clickable. None of this helped.
I also used driver.find_element_by_xpath and others, I tested it with Firefox and Chrome.
How can I click on the button without getting an exception?
Any help would be greatly appreciated

To invoke click() on the element you need to first use WebDriverWait with expected_conditions for the element to be clickable and you can use the following solution:
Using XPATH:
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//button[#id='sbmt' and normalize-space()='Einloggen']"))).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