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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_function_from_settings(settings_key):
 """Gets a function from the string path defined in a settings file. Example: # my_app/my_file.py def some_function():
 # do something pass # settings.py SOME_FUNCTION = 'my_app.my_file.some_function' > get_function_from_settings('SOME_FUNCTION') <function my_app.my_file.some_function> """


    renderer_func_str = getattr(settings, settings_key, None)
    if not renderer_func_str:
        return None

    module_str, renderer_func_name = renderer_func_str.rsplit('.', 1)

    try:
        mod = importlib.import_module(module_str)
        return getattr(mod, renderer_func_name)
    except Exception:
        return None