tester.py

import os
import sys
py3 = False
if sys.version_info[0] >= 3:
	py3 = True
def get_input(message):
	if py3 == True:
		return str(input(message))
	else:
		return raw_input(message)
class Tester(object):
    def test(self):
        try:
            assert os.path.exists("docs/stylesheet.css")
            assert os.path.exists("README.md")
            assert os.path.exists("docs/index.html")
            assert os.path.exists("ebooker.py")
            assert os.path.exists("docs")
            assert type(self) is Tester
            return
        except:
            print("")
            print("An internal error occurred!")
            print("Program execution stopped. Type RETURN to exit.")
            errorloopBool = True
            while errorloopBool:
                errorBool = get_input("")
                sys.exit(1)
if __name__ == "__main__":
    tester = Tester()
    try:
        tester.test()
    except:
        sys.exit(1)
    sys.exit(0)