https://github.com/jab416171/gspread/blob/master/gspread/models.py

gistfile1.py

    def insert_row_at(self, values, row_idx):
        """"Adds a row to the beginning of the worksheet and populates it with values.
        Widens the worksheet if there are more values than columns.

        :param values: List of values for the new row.
        """
        self.add_rows(1)
        data_width = len(values)
        if self.col_count < data_width:
            self.resize(cols=data_width)

        all_cells = self.get_all_values()
        lower_rows = [row:len(all_cells)]

        lower_rows.insert(0, values)
	
	updated_cell_list=[]
        for r, row in enumerate(lower_rows, start=row):
            for c, cell in enumerate(row, start=1):
                ncell = self.cell(r, c)
                ncell.value = all_cells[r-1][c-1]
                updated_cell_list.append(ncell)
    	self.update_cells(updated_cell_list)