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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 simple_response_str(command, status, status_text, content=""):
 """ Creates an OSP response XML string. Arguments: command (str):
 OSP Command to respond to. status (int):
 Status of the response. status_text (str):
 Status text of the response. content (str):
 Text part of the response XML element. Return: String of response in xml format. """

    response = Element('%s_response' % command)
    for name, value in [('status', str(status)), ('status_text', status_text)]:
        response.set(name, str(value))
    if isinstance(content, list):
        for elem in content:
            response.append(elem)
    elif isinstance(content, Element):
        response.append(content)
    else:
        response.text = content
    return tostring(response)