数据分析2

"""
输入参数:
line(first-numberl (last-numberl)l(aux|vty) first-number2 (last-number2))
输出参数:
(first-numberl (last-number1)l(aux|vty) first-number2 (last-number2))
(last-numberl)
(aux|vty)
(last-number2)
注释:取出括号中的元素(涉及到多级括号)
I
"""


def get_indexes(a, b):
    """
    找到元素出现的所有索引
    :param a: 被寻找元素
    :param b: 内容
    :return:
    """
    return [n for n in range(len(b)) if b.find(a, n) == n]


def output(p):
    """
    左侧跟右侧哪个括号可以合成一组?

    获取左、右边括号的所有索引
    符合条件
        1.中间没有括号必取
        2.左侧括弧与右侧括弧间，左括弧数等于右括弧数
    :param :
    :return:
    """
    result = []
    left_n = get_indexes("(", p)
    right_n = get_indexes(")", p)

    for l in left_n:
        for r in right_n:
            if r > l:
                c_p = p[l:r + 1]
                l_count = c_p.count("(")
                r_count = c_p.count(")")
                if l_count == r_count:
                    result.append(c_p)
                    break

    return result


txt = """
line(first-numberl (last-numberl)l(aux|vty) first-number2 (last-number2))
"""
print(output(txt))
# [
#     '(first-numberl (last-numberl)l(aux|vty) first-number2 (last-number2))',
#     '(last-numberl)',
#     '(aux|vty)',
#     '(last-number2)'
# ]

标签：数据分析,last,numberl,number2,vty,aux,first
来源： https://www.cnblogs.com/zhangguosheng1121/p/16168334.html