第一题

import os, time, sys
from pprint import pprint
class ls:
    #输出格式设定
    def __init__(self, path='.'):
        self.path = path

    def output(self):
        localtime = time.localtime()
        Time = '/'.join([str(x) for x in localtime[0:3]])

        if os.name == 'nt':
            print('-' * 30)
            print("{: ^30}".format("OS:Windows"))
            print('-' * 30)
        print("{: <{}}{: >}".format('Time',30-len(Time), Time))

    #实现ls-l

     #获取文件夹下文件个数，只取一层
    def numOfFile(self, path, num=1):
        try:
            if os.path.isdir(path):
                for x in os.listdir(path):
                    num += 1
        except BaseException:
            pass
        finally:
            return num

     #二进制码转换为权限码
    def num2chmod(self, numstr):
        chmod = ['r', 'w', 'x']
        words = ''
        for i, x in enumerate(numstr):
            if x == '1':
                words += (lambda i, chmod : chmod[i % 3])(i, chmod)
            else:
                words += '-'
        return words

    def listdir(self):
        self.output()
        print ('权限\t        文件数\t    用户ID\t   群组Id\t     文件修改日期\t    大小\t    文件名')
        for x in os.listdir(self.path):
            dir = os.path.join(self.path, x)

            # 显示 dir路径文件的信息
            stat = os.stat(dir)

            # 输出INode保护模式的信息
            print(self.num2chmod(str((bin(stat.st_mode)[-9:]))), end='\t')

            # 输出该路径下的文件数量
            print(self.numOfFile(dir), end='\t\t')

            # 输出该用户Id与群组ID
            print(stat.st_uid, end='\t'*2)
            print(stat.st_gid, end='\t'*2)

            # 输出每个文件的修改时间;
            print('/'.join(str(x) for x in time.localtime(stat.st_mtime)[0:3]), end='\t   ')
            print(stat.st_size, end='\t'*2)
            print(x)
    def __call__(self, *args, **kwargs):
        self.listdir()

if __name__ == "__main__":
    ls(sys.argv[1])()

第二题

 import os, pprint
import functools
def isdir(func):
    @functools.wraps(func)
    def wrapper(*args, **kwargs):
        path = args[0]
        if not os.path.isdir(path):
            print("输入路径有误")
            raise ValueError("路径有误")
        return func(*args, **kwargs)
    return wrapper
@isdir
def checkfile(path, key):
    absanw = []
    anw = []
    for x in os.listdir(path):
        if key in x:
            anw.append(x)
            absanw.append(os.path.abspath(x))
        dir = os.path.join('./', x)
        try:
            if os.path.isdir(dir):
                for y in os.listdir(dir):
                    if key in y:
                        anw.append(y)
                        absanw.append(os.path.abspath(y))
        except:
            pass
    return anw, absanw
if __name__ == '__main__':
    while True:
        key = input("输入路径关键字:\n")
        P = input("输入所要查找目录位置:\n")
        path, abspath = checkfile(P, key)

        print('当前目录的相对路径:\n')
        pprint.pprint(path)
        print('当前目录的绝对路径:\n')
        pprint.pprint(abspath)