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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 save_requirejs(target="", version="2.3.4"):
 """Download and save the require javascript to a local file. :type target: str :type version: str """

    url = "https://cdnjs.cloudflare.com/ajax/libs/require.js/{version}/require.min.js".format(version=version)
    filename = "require.min.v{0}.js".format(version)
    filepath = os.path.join(target, filename)
    download_to_file(url, filepath)
    return filename