drop_files.py

import os

def drop_files(element, files, offsetX=0, offsetY=0):
    JS_DROP_FILES = "var k=arguments,d=k[0],g=k[1],c=k[2],m=d.ownerDocument||document;for(var e=0;;){var f=d.getBoundingClientRect(),b=f.left+(g||(f.width/2)),a=f.top+(c||(f.height/2)),h=m.elementFromPoint(b,a);if(h&&d.contains(h)){break}if(++e>1){var j=new Error('Element not interactable');j.code=15;throw j}d.scrollIntoView({behavior:'instant',block:'center',inline:'center'})}var l=m.createElement('INPUT');l.setAttribute('type','file');l.setAttribute('multiple','');l.setAttribute('style','position:fixed;z-index:2147483647;left:0;top:0;');l.onchange=function(q){l.parentElement.removeChild(l);q.stopPropagation();var r={constructor:DataTransfer,effectAllowed:'all',dropEffect:'none',types:['Files'],files:l.files,setData:function u(){},getData:function o(){},clearData:function s(){},setDragImage:function i(){}};if(window.DataTransferItemList){r.items=Object.setPrototypeOf(Array.prototype.map.call(l.files,function(x){return{constructor:DataTransferItem,kind:'file',type:x.type,getAsFile:function v(){return x},getAsString:function y(A){var z=new FileReader();z.onload=function(B){A(B.target.result)};z.readAsText(x)},webkitGetAsEntry:function w(){return{constructor:FileSystemFileEntry,name:x.name,fullPath:'/'+x.name,isFile:true,isDirectory:false,file:function z(A){A(x)}}}}}),{constructor:DataTransferItemList,add:function t(){},clear:function p(){},remove:function n(){}})}['dragenter','dragover','drop'].forEach(function(v){var w=m.createEvent('DragEvent');w.initMouseEvent(v,true,true,m.defaultView,0,0,0,b,a,false,false,false,false,0,null);Object.setPrototypeOf(w,null);w.dataTransfer=r;Object.setPrototypeOf(w,DragEvent.prototype);h.dispatchEvent(w)})};m.documentElement.appendChild(l);l.getBoundingClientRect();return l"
    driver = element.parent
    isLocal = not driver._is_remote or '127.0.0.1' in driver.command_executor._url
    paths = [f if os.path.isfile(f) else FileNotFoundError(f) for f in (files if isinstance(files, list) else [files])]
    value = '\n'.join(paths) if isLocal else '\n'.join([element._upload(file) for file in paths])
    elm_input = driver.execute_script(JS_DROP_FILES, element, offsetX, offsetY)
    elm_input._execute('sendKeysToElement', {'value': [value], 'text': value})