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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 newTextLen(content, len):
 """Creation of a new text node with an extra parameter for the content's length """

    ret = libxml2mod.xmlNewTextLen(content, len)
    if ret is None:raise treeError('xmlNewTextLen() failed')
    return xmlNode(_obj=ret)