human
Solve the following python programming problem given the following code:
def constant_app(status, headers, body) : 
    "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 headers 

    
    

    Fix the buggy line: return headers
assistant
#Here is Python code to fix the buggy line: return headers
.

return def application(