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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_content_type(name, content):
 """ Checks if the content_type is already set. Otherwise uses the mimetypes library to guess. """

    if hasattr(content, "content_type"):
        content_type = content.content_type
    else:
        mime_type, encoding = mimetypes.guess_type(name)
        content_type = mime_type
    return content_type