View the mouse pointer position in Selenium Nightwatch. Execute this code when the page loads or in the javascript console. Use mouse.py for Selenium Python. See https://stackoverflow.com/a/35867777

mouse.gif

mouse.js

// Create mouse following image.
var seleniumFollowerImg = document.createElement("img");

// Set image properties.
seleniumFollowerImg.setAttribute('src', 'data:image/png;base64,'
    + 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAeCAQAAACGG/bgAAAAAmJLR0QA/4ePzL8AAAAJcEhZcwAA'
    + 'HsYAAB7GAZEt8iwAAAAHdElNRQfgAwgMIwdxU/i7AAABZklEQVQ4y43TsU4UURSH8W+XmYwkS2I0'
    + '9CRKpKGhsvIJjG9giQmliHFZlkUIGnEF7KTiCagpsYHWhoTQaiUUxLixYZb5KAAZZhbunu7O/PKf'
    + 'e+fcA+/pqwb4DuximEqXhT4iI8dMpBWEsWsuGYdpZFttiLSSgTvhZ1W/SvfO1CvYdV1kPghV68a3'
    + '0zzUWZH5pBqEui7dnqlFmLoq0gxC1XfGZdoLal2kea8ahLoqKXNAJQBT2yJzwUTVt0bS6ANqy1ga'
    + 'VCEq/oVTtjji4hQVhhnlYBH4WIJV9vlkXLm+10R8oJb79Jl1j9UdazJRGpkrmNkSF9SOz2T71s7M'
    + 'SIfD2lmmfjGSRz3hK8l4w1P+bah/HJLN0sys2JSMZQB+jKo6KSc8vLlLn5ikzF4268Wg2+pPOWW6'
    + 'ONcpr3PrXy9VfS473M/D7H+TLmrqsXtOGctvxvMv2oVNP+Av0uHbzbxyJaywyUjx8TlnPY2YxqkD'
    + 'dAAAAABJRU5ErkJggg==');
seleniumFollowerImg.setAttribute('id', 'selenium_mouse_follower');
seleniumFollowerImg.setAttribute('style', 'position: absolute; z-index: 99999999999; pointer-events: none;');

// Add mouse follower to the web page.
document.body.appendChild(seleniumFollowerImg);

// Track mouse movements and re-position the mouse follower.
document.onmousemove = function(e) {
  const mousePointer = document.getElementById('selenium_mouse_follower');
  mousePointer.style.left = e.pageX + 'px';
  mousePointer.style.top = e.pageY + 'px';
}

mouse.py

# One line for Python, assuming `driver` is a WebDriver instance.
driver.execute_script("""var seleniumFollowerImg=document.createElement("img");seleniumFollowerImg.setAttribute("src","data:image/png;base64,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"),seleniumFollowerImg.setAttribute("id","selenium_mouse_follower"),seleniumFollowerImg.setAttribute("style","position: absolute; z-index: 99999999999; pointer-events: none;"),document.body.appendChild(seleniumFollowerImg),document.onmousemove=function(e){const A=document.getElementById("selenium_mouse_follower");A.style.left=e.pageX+"px",A.style.top=e.pageY+"px"};""")