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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 wr_py_sections(self, fout_py, sections, doc=None):
 """Write sections 2-D list into a Python format list."""

        if sections is None:
            sections = self.grprobj.get_sections_2d()
        sec2d_nt = self.get_sections_2dnt(sections)  # lists of GO Grouper namedtuples
        with open(fout_py, 'w') as prt:
            self._prt_py_sections(sec2d_nt, prt, doc)
            dat = SummarySec2dHdrGos().summarize_sec2hdrgos(sections)
            sys.stdout.write(self.grprobj.fmtsum.format(
                GO_DESC='hdr', SECs=len(dat['S']), GOs=len(dat['G']),
                UNGRP=len(dat['U']), undesc="unused",
                ACTION="WROTE:", FILE=fout_py))