#纵向合并单元格取左上角的值为自己的值，横向合并单元格除了左上角单元格外，保持None为自己的值
import openpyxl
from openpyxl.cell import MergedCell

if __name__ == "__main__":
    wb = openpyxl.load_workbook("test.xlsx")
    sheet = wb["Sheet1"]
    all_data=[]
    for column in sheet.columns:
        cellnew = []
        for cell1 in column:

            if isinstance(cell1, MergedCell):
                for merged_range in sheet.merged_cells.ranges[:]:
                    if (cell1.coordinate in merged_range):

                        if(cell1.column==merged_range.min_col):

                            cellvalue = sheet.cell(row=merged_range.min_row, column=merged_range.min_col).value
                            cellnew.append(cellvalue)
                            print("纵向合并单元格：",cell1.value)
                        else:
                            cellnew.append(cell1.value)
                            print("横向合并单元格：", cell1.value)
            else:
                cellnew.append(cell1.value)
                print("非合并单元格：", cell1.value)
        all_data.append(cellnew)
    print(all_data)

openpyxl合并单元格处理实例