XPath是正确的，但找不到Web元素

Question

I'm new to Python and coding. I'm trying to pass an XPath in the form of an outside value inside browser.find_element_by_xpath() . I've used the XPath in the browser console and it is correct, I've also used time.sleep() in various places to make the web page is loaded but I get an error. My question, is it even possible to find the element with this code?

a=input()
b = a.split(",")

for i in range(len(b)):

    c = ("""'//a[@title="{}"]'""".format(b[i]));time.sleep(1)
    print(c)
    print(type(c))
    act1 = browser.find_element_by_xpath(c)

---

Error message:

FLQV-7734

'//a[@title="FFLQV-7734"]'

selenium.common.exceptions.InvalidSelectorException: Message: invalid selector: Unable to locate an element with the xpath expression '//a[@title="FFLQV-7734"]' because of the following error: TypeError: Failed to execute 'evaluate' on 'Document': The result is not a node set, and therefore cannot be converted to the desired type. (Session info: chrome=72.0.3626.81) (Driver info: chromedriver=73.0.3683.68 (47787ec04b6e38e22703e856e101e840b65afe72),platform=Windows NT 10.0.14393 x86_64)

Answer 1

The exception is telling you the XPath is not valid. I suspect it is the extra single quotes around your xpath:

"""'//a[@title="{}"]'"""
   ^                ^

This should probably work:

"""//a[@title="{}"]"""

Making the final line of code:

c = ("""//a[@title="{}"]""".format(b[i]));time.sleep(1)

Without the single quotes before the // and after the ] character.