How to upload file ( picture ) with selenium, python

What I'm doing is this (make sure drv is an instance of webdriver):

drv.find_element_by_id("IdOfInputTypeFile").send_keys(os.getcwd()+"/image.png")

and then find your submit button and click it.

A very easy way to control components like windows file selector (or just your OS in general) is by using pyautogui. You can install pyautogui through pip

import pyautogui
... # set the webdriver etc.
...
...
element_present = EC.presence_of_element_located((By.XPATH, "//button[@title='Open file selector']"))  # Example xpath

WebDriverWait(self.driver, 10).until(element_present).click() # This opens the windows file selector

pyautogui.write('C:/path_to_file') 
pyautogui.press('enter')