for i in range(3):
data_input_xsls = xlrd.open_workbook("C:")
sheet_in = data_input_xsls.sheet_by_name("")
rows_in = sheet_in.row_values(0)
array_in_x = sheet_in.cell().value
array_in_y = sheet_in.cell().value
rows_in_array_i = [array_in_x,array_in_y]
lst.append(rows_in_array_i)
print(lst)
lst跳出循环后可否再次调用