File upload using selenium python

[Sumit Garg]

I have been trying to upload a file on a web page. Website Link, my office website is similar to this website. When we click on upload button a system dialog appears, I've been trying to deal with that system dialog but failed. I found following code on the web but it doesn't work for me:

import time
import pywinauto 
import psutil 
from selenium import webdriver


class SystemDialog:
RECURSION_LIMIT = 20

def __init__(self, application_pid, dialog_title=None):

self.__path_to_file = None
self.__recursions = 0

self.dialog_title = "Open" if dialog_title is None else dialog_title
self.accept_button = "&SaveButton" if self.dialog_title == "Save As" else "&OpenButton"
self.decline_button = "&CancelButton"

app = pywinauto.application.Application()
app.connect(process=application_pid)
self.dialog = app.window(title=self.dialog_title)

def __wait_for_dialog(self):
start = time.time()
while not self.dialog.exists() and (time.time() - start) <= 10:
time.sleep(1)
if not self.dialog.exists():
raise Exception("System Dialog did not show in 10 seconds")

def input_file_path(self, path_to_file):
self.__wait_for_dialog()
self.__path_to_file = path_to_file
if path_to_file is not None:
self.dialog.set_focus()
self.dialog.Edit.type_keys(self.__path_to_file)
return self

def accept(self):
if self.__recursions == SystemDialog.RECURSION_LIMIT:
raise Exception("Not able to accept the System dialog.")

self.__wait_for_dialog()
self.dialog.set_focus()
self.dialog[self.accept_button].click()

if self.dialog.exists():
self.__recursions += 1
if self.__path_to_file is not None:
return self.input_file_path(self.__path_to_file).accept() # <--- FYI Recursion
else:
raise Exception("Trying to accept dialog without any inputs, not gonna work.")
self.__recursions = 0

def decline(self):
if self.__recursions == SystemDialog.RECURSION_LIMIT:
raise Exception("Not able to decline the System dialog.")

self.__wait_for_dialog()
self.dialog.set_focus()
self.dialog[self.decline_button].click()

if self.dialog.exists():
self.__recursions += 1
return self.decline() # <--- Recursion
self.__recursions = 0


driver = webdriver.Chrome("chromedriver.exe")
driver.get("https://convertio.co/")
driver.find_element_by_xpath("(//label[@for='pc-upload-add'])[3]").click()

process = psutil.Process(driver.service.process.pid) # chromedriver pid
pid = process.children()[0].pid # chrome tab pid

dialog = SystemDialog(application_pid=pid)
dialog.input_file_path("C:/Users/sumit.garg/a.txt")
dialog.accept()

Any ideas or suggestions?