A simple library to perform a continuous screenshot of your screen using pyautogui module - In Python

Screenshoter.py

# MIT License
# Copyright (c) 2016 Derrick Rono
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
#
# Firstly install Pyautogui module using:
#
# pip install pyautogui

import pyautogui, os, datetime

counter = 0
directory = "Image Folder"
imageFilePrefix = "Screenshot"
currentTime = datetime.datetime

# Create screenshot directory (if it doesn't exist)
def CreateDirectory():
  if not os.path.exists(directory):
      os.makedirs(directory)


# Entry point
if __name__ == '__main__':
  try:
    #create directory if missing
    CreateDirectory()

    while True:
      # Increase the image counter
      counter += 1

      # Take screenshot
      pic = pyautogui.screenshot()
      
      # Save the image
      pic.save("%s/%s-%s.png" % (directory, imageFilePrefix, str(currentTime.now()).replace(':', '').replace('.', '')) )

      print("Saved Screenshot %s" % counter)

  except Exception as e:
    print(e)

To install pyautogui module, run the command below on your command line/terminal:

pip install pyautogui