working with pop-up (adapted)

popup_example.py

from splinter.browser import Browser

browser = Browser()
browser.visit('http://media.douglasmiranda.com/labs/exemplos/splinter_pop-up/')

parent_window = browser.current_window  # Save the parent window
browser.find_by_id('open-popup').first.click()

for window in browser.windows:
    # Switch to a different window (the pop-up)
    browser.switch_to_window(window)
    # Check if this is the one we want by comparing the title
    if browser.title == 'Pop-up Window':
        break
    # Most of the times there are only two windows
    # the parent and the pop-up.
    # In this case the following condition also does the trick
    # if window != browser.parent_window:
    #     break

# now 'browser' is the pop-up instance
# Proves we can interact with the popup
if browser.is_element_present_by_id('pop-up-content-div-element'):
    print browser.find_by_id('pop-up-content-div-element').text
browser.find_by_id("close-popup").first.click()

# let's switch back to the parent_window
# now 'browser' is, again, the main window, so you can manipulate as always
browser.switch_to_window(parent_window)
print browser.find_by_css('h1').first.text
browser.quit()