Selenium Compound Class Names Not Permitted

Compound class names not permitted error Webdriver

You can access the element if it has multiple classes using "By":

from selenium.webdriver.common.by import By
driver.findElement(By.cssSelector(".alert.alert-success"));

Selenium Compound class names not permitted

Leon's comment leads to the correct information that compound class names are no longer supported. What you could do instead is try using css selectors. In your case, the following line of code should help you get the element you want :

el3 = driver.find_element_by_css_selector(".action-btn.cancel.alert-display")

It finds the element with all three classes (action-btn, cancel and alert-display) in the class attribute. Do note that the order of the classes does not matter here and any of the classes may appear anywhere in the class attribute. As long as the element has all three classes, it will be selected.
If you want the order of the classes to be fixed, you can use the following xpath :

el3 = driver.find_element_by_xpath("//*[@class='action-btn cancel alert-display']") 

Invalid selector: Compound class names not permitted error using Selenium

As per the documentation of selenium.webdriver.common.by implementation:

class selenium.webdriver.common.by.By
    Set of supported locator strategies.

    CLASS_NAME = 'class name'

So,

• Using find_element_by_class_name() you won't be able to pass multiple class names.
  Passing multiple classes you will face the error as:

  Message: invalid selector: Compound class names not permitted
  

• Additionally, as you want to return an array of the chats, so instead of find_element* you need to use find_elements*

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Solution

As an alternative you can use either of :the following Locator Strategies:

• CSS_SELECTOR:

  recived_msg = driver.find_elements_by_css_selector(".XELVh.selectable-text.invisible-space.copyable-text")
  

• XPATH:

  recived_msg = driver.find_elements_by_xpath("//*[@class='XELVh selectable-text invisible-space copyable-text']")
  

InvalidSelector Error: compound class names not permitted using FindElementByClass

You need to take care of a couple of things here:

• The classnames of the <span> looks dynamic and and may change sooner or later, even may be next time you access the application afresh.
• Selenium doesn't permit compund class names

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Solution

To identify the element you can use the following locator strategies:

• Using FindElementByCss:

  bot.FindElementByCss("span[title='Customer']")
  

• Using FindElementByXPath:

  bot.FindElementByXPath("//span[@title='Customer' and text()='Customer']")
  

Compound class names not permitted in Selenium

You can just search for the pager__item--last class - it uniquely identifies the element, given the HTML code you have presented:

driver.findElement(By.className("pager__item--last"));

Or, with a CSS selector:

driver.findElement(By.cssSelector(".pager__item--last"));

Or, making an exact class match:

driver.findElement(By.cssSelector("li[class='pager__item pager__item--last']"));

Findelement Run-time error '32' Compound Class names not permitted

Run-time error '32' message saying "Compound Class names not permitted the error suggested that FindElementsByClass() doesn't support multiple class names
it supports only class name

You can either pass single class only in FindElementsByClass() or use FindElementByCss() or FindElementByXPath()

Option 1:

 Driver.FindElementsByClass("ui-button-text").Click

Option 2:

 Driver.FindElementByCss(".ui-button-text.ui-clickable").Click

Option 3:

Driver.FindElementByXPath("//span[text()='Order Quotes']").Click

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