How to assert values on a page opened by a link on another page?

Question

A link on page 1 opens a new page "receipt page". It contains only text values. I need to assert or verify values on the receipt page to ensure that this is the correct receipt.

After executing the line

driver.find_element_by_link_text("Print Order!").click() #this what navigates the receipt page 

the following tags are returned and must be validated:

<div style="border-bottom:1px dashed black;">
<span>Receipt No: 197</span>
<span style="font-size:smaller;font-weight:lighter;margin-left:130px;">16/10/2012 -04:10 pm </span>
<br>
<span>Customer Name: 123</span>
<br>
<span>Cashier Name: engy</span>
<br>
<br>
<table width="100%" style="font-size:smaller; border-bottom:1px dotted black;text-align:center;">
<br>
<span>Total Cost: 5700</span>

Answer 1

In C# the code would be:

driver.SwitchTo().Window(driver.WindowHandles.Last());

This will switch to the newly opened window and then you would treat it just like any other page. To switch back would be:

driver.SwitchTo().DefaultContent();