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Selenium unable to locate and click a button

I have tried to make my script click the checkout button with WebDriverWait, XPath, Class, but it doesn't work anyways :
HTML
<div class="confirm-container row">
:before
<div class="col-xs-12">
<button class="btn btn-primary">
<span>Effettua l'ordine</span>
</button>
</div>
::after
</div>
1st try
var = '//*[#id="purchase-app"]/div/div[4]/div[1]/div[2]/div[5]/div/div/button'
WebDriverWait(web, 50).until(EC.element_to_be_clickable((By.XPATH, var)))
web.find_element_by_xpath(var).click()
2nd try
web.find_element_by_class_name('btn btn-primary').click()
3rd try
ActionChains(web).click(web.find_element_by_class_name('btn btn-primary')).perform()

When you are using Explicit wait, try to have a relative xpath :
1st try issue can be resolved by the below code :
WebDriverWait(web, 10).until(EC.element_to_be_clickable((By.XPATH, "//span[text()='Effettua l'ordine']/.."))).click()
2nd try web.find_element_by_class_name('btn btn-primary').click() - class name does not accept spaces so, use css selector instead :
web.find_element_by_css_selector('button.btn.btn-primary').click()
same issue with 3rd try.
Update 1 :
The issue is that, the button you are looking is in iframe so you need to switch over it before interaction :
Code :
wait = WebDriverWait(driver, 10)
wait.until(EC.frame_to_be_available_and_switch_to_it((By.CSS_SELECTOR, "iframe[src^='/store/purchase?namespace']")))
wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, "button.btn.btn-primary"))).click()
Imports :
from selenium.webdriver.common.by import By
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

You can try this
from selenium.webdriver import ActionChains
ActionChains(browser).click(element).perform()
while element refer to anything between the start tag and end tag.
as stated in the answer here: https://stackoverflow.com/a/61036237/11884764

How do you click an expander button in Python with Selenium?

I am working on a script for selenium to open a webpage, and click a series of buttons. The first button is an Expander button, shown in the below image
The HTML code from inspecting the button is below, but the button itself is "class="dojoxExpandoIcon dojoxExpandoIconLeft qa-button-toc"
<div class="dojoExpandoPaneInner">
<div data-dojo-attach-point="titleWrapper" class="dojoxExpandoTitle">
<div class="dojoxExpandoContainer">
<div class="dojoxExpandoIcon dojoxExpandoIconLeft qa-button-toc" data-dojo-attach-point="iconNode" data-dojo-attach-event="ondijitclick:_onIconNodeClick" tabindex="0" aria-controls="slideout"><span class="a11yNode">X</span></div>
</div>
The xpath as well, is as follows:
/html[#class='dj_webkit dj_chrome dj_contentbox has-webkit has-no-quirks svg']/body[#class='claro original']/div[#id='border']/div[#id='slideout']/div[#class='dojoExpandoPaneInner']/div[#class='dojoxExpandoTitle']/div[#class='dojoxExpandoContainer']/div[#class='dojoxExpandoIcon dojoxExpandoIconLeft qa-button-toc']
To find this button, I tried the following code one at a time.
driver.find_element_by_css_selector("div[class^='dojoxExpandoIcon']") # find expander by class name
# driver.find_element_by_css_selector("div[class^='dojoxExpandoIcon dojoxExpandoIconLeft qa-button-toc']") # find expander by class name
# driver.find_element_by_css_selector("div.dojoxExpandoContainer")
However, none of them have worked at all, and result in errors such as
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"css selector","selector":"div.dojoxExpandoIcon.dojoxExpandoIconLeft.qa-button-toc"}
Is there anything I'm doing wrong here?

Try waiting until the locator is clickable:
from selenium.webdriver.common.by import By
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
wait = WebDriverWait(driver, 15)
wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, ".dojoxExpandoIcon.dojoxExpandoIconLeft.qa-button-toc")))
button = driver.find_element_by_css_selector(".dojoxExpandoIcon.dojoxExpandoIconLeft.qa-button-toc").click()
If the number of classes is not stable, remove the ones that are changing and leave only stable ones, for example:
.dojoxExpandoIconLeft.qa-button-toc
Here I just removed one of classes.
Read more about waits here https://selenium-python.readthedocs.io/waits.html.

How do i click on the link while using selenium python

I'm new to python and selenium.
This is an HTML snippet of the page im trying to scrape a page this
I want to scrape on the basis of data-attr1 given in the html snippet.
Please share some code to find this link and click on it.
<a class="js-track-click challenge-list-item" data-analytics="ChallengeListChallengeName" data-js-track="Challenge-Title" data-attr1="grading" data-attr3="code" data-attr4="true" data-attr5="true" data-attr7="10" data-attr-10="0.9" data-attr11="false" href="/challenges/grading"><div class="single-item challenges-list-view-v2 first-challenge cursor"><div id="contest-challenges-problem" class="individual-challenge-card-v2 content--list-v2 track_content"><div class="content--list_body"><header class="content--list_header-v2"><div class="challenge-name-details "><div class="pull-left inline-block"><h4 class="challengecard-title">Grading Students<div class="card-details pmT"><span class="difficulty easy detail-item">Easy</span><span class="max-score detail-item">Max Score: 10</span><span class="success-ratio detail-item">Success Rate: 96.59%</span></div></h4></div></div><span class="bookmark-cta"><button class="ui-btn ui-btn-normal ui-btn-plain star-button" tabindex="0" aria-label="Add bookmark"><div class="ui-content align-icon-right"><span class="ui-text"><i class="js-bookmark star-icon ui-icon-star"></i></span></div></button></span><div class="cta-container"><div class="ctas"><div class="challenge-submit-btn"><button class="ui-btn ui-btn-normal primary-cta ui-btn-line-primary" tabindex="0"><div class="ui-content align-icon-right has-icon"><span class="ui-text">Solved</span><i class="ui-icon-check-circle ui-btn-icon"></i></div></button></div></div></div></header></div></div><div class="__react_component_tooltip place-top type-dark " data-id="tooltip"></div></div></a>

If the page is not loading as fast as expected you can try:
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//a[#data-attr1='grading']"))).click()

You can click on the element using the xpath:
element = driver.find_element_by_xpath("//a[#data-attr1='grading']")
element.click();

Since there is no name id or class available directly you can use xpath.
The element that you are looking for is in div with class challenges-list and you want to click on first link inside it. You can use this xpath
//a[#data-attr1='grading']
And for clicking you can do
driver.find_element_by_xpath("//a[#data-attr1='grading']").click()

Use double-click with Actionchains because click might not work in Python.
eg.
from selenium.webdriver import ActionChains
# Get the element however you want
element = driver.find_element_by_xpath("//a[#data-attr1='grading']")
ActionChains(driver).double_click(settings_icon).perform()

can't click button or submit form using Selenium

I'm trying to use Selenium w/ Python to click on answers to problems posted at a tutoring site, so I can take tests over the command line.
I enter the following:
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
driver.get('https://www.varsitytutors.com/sat_critical_reading_diagnostic_1-problem-10821')
(an annoying popup comes up at this point -- we can ignore that for now)
Answers on the page are embedded in forms like this:
<div class="question_row">
<form class="button_to" method="post" action="/problem_question_answers/save_answer?answer_id=539461&problem_id=5065&qotd=false&question_id=10821">
<input id="answer_539461" class="test_button" type="submit" value="select" /><input type="hidden" name="authenticity_token" value="LE4B973DghoAF6Ja2qJUPIajNXhPRjy6fCDeELqemIl5vEuvxhHUbkbWeDeLHvBMtEUVIr7okC8Njp4eMIuU3Q==" /></form>
<div class="answer">
<p>English dramatists refused to employ slang in their work.</p>
</div>
<div style="clear:both"></div>
</div>
My goal is to click an answer such as this one in order to get to the next question using Selenium.
I thought it might be as easy as doing this:
answer_buttons=driver.find_elements_by_class_name('test_button')
answer_buttons[1].click()
But I get error messages saying that the element is out of the frame of the driver.
I've also tried submitting the form, which doesn't produce an error message:
answer_forms=driver.find_elements_by_class_name('button_to')
answer_forms[1].submit()
But it redirects to a different url that doesn't load:
http://www.varsitytutors.com/sat_critical_reading_diagnostic_1-problems-results-d9399f1a-4e00-42a0-8867-91b1c8c9057d
Is there any way to do this programmatically, or is the website's code going to prevent this?
Edit:
With some help I was able to click the button once initially. But an identical submit button (by xpath) for the next question remains unclickable. This is the code I'm presently using:
driver.get('https://www.varsitytutors.com/practice-tests')
# click subject
subject=driver.find_element_by_xpath('/html/body/div[3]/div[9]/div/div[2]/div[1]/div[1]')
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,'/html/body/div[3]/div[9]/div/div[2]/div[1]/div[1]')))
subject.click()
# select specialty
specialty=driver.find_element_by_xpath('/html/body/div[3]/div[9]/div/div[2]/div[2]/div[1]/div[2]/a[4]')
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,'/html/body/div[3]/div[9]/div/div[2]/div[2]/div[1]/div[2]/a[4]')))
specialty.click()
# select test
taketest=WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,'/html/body/div[3]/div[8]/div[3]/div[1]/div[1]/a[1]')))
driver.execute_script("arguments[0].click();", taketest)
# click away popup
button=WebDriverWait(driver,5).until(EC.element_to_be_clickable((By.XPATH,"//button[contains(.,'No Thanks')]")))
button.location_once_scrolled_into_view
button.click()
# select first choice
choice=WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.XPATH,'/html/body/div[3]/div[7]/div[1]/div[3]/div[1]/form/input[1]')))
driver.execute_script("arguments[0].click();", choice)
I repeat this code again over the next few lines. It has no effect, however; the drive stays on question two and the next few clicks don't work...
choice=WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.XPATH,'/html/body/div[3]/div[7]/div[1]/div[3]/div[1]/form/input[1]')))
driver.execute_script("arguments[0].click();", choice)
choice=WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.XPATH,'/html/body/div[3]/div[7]/div[1]/div[3]/div[1]/form/input[1]')))
driver.execute_script("arguments[0].click();", choice)

Try the following code.This will handle pop-up and click on the select button.
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium import webdriver
driver=webdriver.Chrome()
driver.get('https://www.varsitytutors.com/sat_critical_reading_diagnostic_1-problem-10821')
driver.maximize_window()
button=WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.XPATH,"//button[contains(.,'No Thanks, Start The Test')]")))
button.location_once_scrolled_into_view
button.click()
eleQuestions=WebDriverWait(driver,10).until(EC.presence_of_all_elements_located((By.CSS_SELECTOR,'input.test_button')))
driver.execute_script("arguments[0].click();", eleQuestions[2])
button=WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.XPATH,"//button[contains(.,'No Thanks')]")))
button.location_once_scrolled_into_view
button.click()
Please note: you can change the indexes from 2 to 6.
Snapshot:
If you would like to select any particular Question as you mentioned then try below code.
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium import webdriver
driver=webdriver.Chrome()
driver.get('https://www.varsitytutors.com/sat_critical_reading_diagnostic_1-problem-10821')
driver.maximize_window()
button=WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.XPATH,"//button[contains(.,'No Thanks, Start The Test')]")))
button.location_once_scrolled_into_view
button.click()
eleQuestions=WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.XPATH,"//div[./p[text()='English dramatists refused to employ slang in their work.']]/parent::div//input[1]")))
driver.execute_script("arguments[0].click();", eleQuestions)
button=WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.XPATH,"//button[contains(.,'No Thanks')]")))
button.location_once_scrolled_into_view
button.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