from flaskblog import app

if __name__ == '__main__':
    app.run(debug=True)

 
#Before executing code, Python interpreter reads source file and define few special variables/global variables.
#If the python interpreter is running that module (the source file) as the main program,
#it sets the special __name__ variable to have a value “__main__”. If this file is being imported from another module,
#__name__ will be set to the module’s name. Module’s name is available as value to __name__ global variable.    