@staticmethod
    def _show_previous_blank_lines(block):
        """
        Show the block previous blank lines
        """
        # set previous blank lines visibles
        pblock = block.previous()
        while (pblock.text().strip() == '' and
               0 >= pblock.blockNumber()):
            pblock.setVisible(True)
            pblock = pblock.previous()
dataset/ETHPy150Open OpenCobolIDE/OpenCobolIDE/open_cobol_ide/extlibs/pyqode/core/panels/folding.py/FoldingPanel._show_previous_blank_lines/swapped operands of `>=`