human
Complete this python program:
def constant_app(status, headers, body):
assistant
#Here is the Python code you requested.

    """Creates a WSGI application that produces a constant response.
    Args:
    status: A status code and message as a string. (e.g., \200 OK\.)
    headers: A list of tuples containing the response headers.
    body: A string containing the response body.
    Returns:
    A WSGI application, as defined in PEP-333.
    """
    def application(unused_environ, start_response):
        start_response(status, headers)
        return [body]
    return application