Python Selenium XPath追溯错误

Question

I am getting an error with selenium's find_element_by_xpath. This is the error I'm getting:

Traceback (most recent call last):
  File "/Users/iyadschool/Desktop/q_hack.py", line 15, in <module>
    text = driver.find_element_by_xpath("//*[contains(text(), ' " + term[1] + "')]")
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 354, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 832, in find_element
    'value': value})['value']
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 297, in execute
    self.error_handler.check_response(response)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py", line 194, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//*[contains(text(), ' indifference')]"}
  (Session info: chrome=64.0.3282.186)
  (Driver info: chromedriver=2.35.528157 (4429ca2590d6988c0745c24c8858745aaaec01ef),platform=Mac OS X 10.12.6 x86_64)

Here is the piece of code that the error is pointing to:

term = ["impalpable", "indifference", "complacent", "transpire", "abject", "derivative", "derive", "dispel", "authentic", "deprived", "aesthetic", "affinity", "depict", "impertinent", "inevitable", "deviate", "aggrandize", "aggregate"]
definition = ["unable to be felt", "lack of concern", "self-satisfied", "to happen", "miserable", "unoriginal", "to get\
come from", "to drive away", "real", "take away something", "pertaining to beauty", "a natural attraction or feeling of kinship", "To give a picture of; to describe", "rude and disrespectful", "unavoidable", "depart, from a path or plan", "to increase in power, influence, and reputation", "(v.) - to gather, amass"]

termnumb = len(term)
defnumb = len(definition)

text = driver.find_element_by_xpath("//*[contains(text(), ' " + term[1] + "')]")
text.click()

I don't know what is going on? I am trying to make a code that gets the first term and definition from the list. Then it clicks on both of them on the page and goes to the next term. I want to find the element by the text between the tags ( term name )

Thanks in advance.

Answer 1

If you are using contains(), provide the bare minimum to ensure a unique text match. Hint: any extraneous characters can bite you.

Try your locator out in the browser using the console in the dev tools. $$("css selector here") or $x("xpath here"). If it returns your element, you're locked and loaded. If not, adapt and overcome.

Here is another useful method of troubleshooting:

elem = driver.find_element_by_xpath("//div[contains(text(), 'derive')]")
import pdb; pdb.set_trace()
text.click()

It will drop you into your script just before the click, with all the variables intact. Try running element.click() manually, and watching what happens on your page. Clicks can be finicky, you may have to try clicking with offset, or in extreme cases executing a javascript snipped to click (I've found this is rare and a last resort).