Identify Nth element using Playwright Python

Tutorial 3​​ ​​ Identify Nth element​​ using​​ Playwright​​ Python​​ 

What you will Learn​​ in this​​ blog:

  • How to identify nth element​​ using Playwright​​ Python

  • Code snippets

How to identify nth element​​ using Playwright python

Launch

https://www.way2automation.com/angularjs-protractor/registeration/#/login​​ ​​ 

Notice below that there are 3 text fields

Inspect any of the text field, notice that the​​ text​​ field​​ is​​ of​​ the​​ type ‘input’ tagname

Let us use the ‘input’ locator and fill the text field with some string:

So our code​​ snippet​​ looks like:

Save and execute

Notice the expected error below.​​ 

The playwright​​ complains that it​​ has found 3 input fields and is unable to decide which input field it should consider

So how do we instruct playwright to select the first input field?

We can use the below​​ convention.​​ 

The first field has index 0, second has index​​ 1 ​​​​ and so on…

We can now use ‘nth element’ syntax

Save and execute.

Notice below that ‘angular’ gets typed in first text field

Let us change the index to 2

Save and execute.

Notice below that ‘angular’ gets typed in last text field

Let us now use nth element approach to fill all the 3 fields

Save and execute.​​ 

Notice below that​​ all the 3 fields are populated and​​ we are logged in

We can also use negative index numbers. The last field will have the index -1 and so on….

Let us try with -1

Comment lines#10, 11, 12, 14

Save and execute.​​ 

Notice below that the last input field gets populated


Code snippet

from​​ playwright.sync_api​​ import​​ Playwright,​​ sync_playwright,​​ expect


def​​ run(playwright: Playwright) ->​​ None:
 ​​ ​​ ​​​​ browser = playwright.chromium.launch(
headless=False,slow_mo=2000)
 ​​ ​​ ​​​​ context = browser.new_context()


 ​​ ​​ ​​​​ page = context.new_page()

 ​​ ​​ ​​​​ page.goto(
"https://www.way2automation.com/angularjs-protractor/registeration/#/login")
 ​​ ​​ ​​​​ 
#page.locator("input >> nth=0").fill("angular")
 ​​ ​​ ​​​​ #page.locator("input >> nth=1").fill("password")

 ​​ ​​ ​​​​ #page.locator("input >> nth=2").fill("angular")
 ​​ ​​ ​​​​ 
page.locator("input >> nth=-1").fill("angular")
 ​​ ​​ ​​​​ 
#page.locator("button").click()

 ​​ ​​ ​​​​ # ---------------------

 ​​ ​​ ​​​​ 
context.close()
 ​​ ​​ ​​​​ browser.close()



with​​ sync_playwright()​​ as​​ playwright:
 ​​ ​​ ​​​​ run(playwright)

 

Thank you for reading!

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