按两个分隔符将字符串拆分为两列

def split_into_two_columns(input_string, delimiter1, delimiter2):
    # 先按第一个分隔符拆分
    first_split = input_string.split(delimiter1)
    result = []
    
    for part in first_split:
        # 再按第二个分隔符拆分每个部分
        second_split = part.split(delimiter2)
        if len(second_split) == 2:
            result.append(second_split)
    
    return result

# 示例字符串
input_string = "apple,banana;orange,grape;mango,pineapple"
delimiter1 = ';'
delimiter2 = ','

# 调用函数并打印结果
result = split_into_two_columns(input_string, delimiter1, delimiter2)
print(result)

[['apple', 'banana'], ['orange', 'grape'], ['mango', 'pineapple']]