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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_page_break_positions(docbody):
 """Locate page breaks in the list of document lines and create a list positions in the document body list. @param docbody: (list) of strings - each string is a line in the document. @return: (list) of integer positions, whereby each integer represents the position (in the document body) of a page-break. """

    page_break_posns = []
    p_break = re.compile(ur'^\s*\f\s*$', re.UNICODE)
    num_document_lines = len(docbody)
    for i in xrange(num_document_lines):
        if p_break.match(docbody[i]) is not None:
            page_break_posns.append(i)
    return page_break_posns