When extracting body of a document in HTML source format (i.e. without pandoc conversion before display), use BeautifilSoup, which is more tolerant, instead of xml.dom.minidom, which crashes too often.

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def update(obj, kwargs):

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    """

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    Update obj attributes with values from kwargs

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    """

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    for k,v in kwargs.items():

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        if hasattr(obj,k):

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            setattr(obj,k,v)

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