Python第六周 学习笔记（3）

def filecopy(filename:str, cp_filename:str):
    '''
    Author: lijl
    Description: 复制文件

    type filename: str
    type cp_filename: str
    rtype: int
    '''
    try:
        with open(cp_filename, 'w+') as f1, open(filename, 'r') as f2:
            f1.write(f2.read())
    except Exception as e:
        print('Exception :', e)
        return 1
    return 0

def word_count(filename:str, topN:int):
    '''
    Author: lijl
    Description: 统计单词数量

    type filename: str
    type topN: int
    rtype: None
    '''

    result = {}
    table = str.maketrans('.,/\()+=:\'"', '           ')

    #处理非字母字符&插入字典
    with open('sample.txt', 'r') as f:
        for i in f:      
            s = i.lower().translate(table).split()
            for j in s:
                if j in result.keys():
                    result[j] += 1
                else:
                    result[j] = 1

    #将字典按照key排序
    topN_lst = sorted(result, key = lambda x:result[x], reverse=True)

    for i in range(topN):
        print('{}, {}'.format(topN_lst[i], result[topN_lst[i]]))

    return

def word_count(filename:str, topN:int, *args):
'''
Author: lijl
Description: 统计单词数量

type filename: str
type topN: int
type args: strs 
rtype: None
'''

result = {}
table = str.maketrans('.,/\()+=:\'"', '           ')

#处理非字母字符&插入字典
with open(filename) as f:
    for i in f:      
        s = i.lower().translate(table).split()
        for word in s:
            if word not in args:
                result[word] = result.get(word, 0) + 1

#将字典按照key排序
topN_lst = sorted(result.items(), key = lambda result:result[1], reverse=True)

for k, v in topN_lst[:topN]:
    print('{}, {}'.format(v, k))

return 

from configparser import ConfigParser

def ini2json(filename):
    '''
    Author: lijl
    Description: ini转json

    type filename: str
    rtype: str
    '''

    section_dict = {}
    section_list = []

    cfg = ConfigParser()
    cfg.read(filename)

    if len(cfg.items('DEFAULT')) != 0:
        section_list.append('DEFAULT')

    section_list += cfg.sections()

    for section_name in section_list:
        section_dict[section_name] = cfg.items(section_name)

    return json.dumps(section_dict)

import os
import argparse
import datetime
from pathlib import Path

parser = argparse.ArgumentParser(add_help=False)
parser.add_argument("dir", type=str, nargs='?', default=Path.cwd())
parser.add_argument("-a","--all", action ='store_true')
parser.add_argument("-l", action ='store_true')
parser.add_argument("-h", "--human", action ='store_true')
args = parser.parse_args()

if args.dir:
    dr = Path(args.dir)

MODE_DICT = {'0':'---', '1':'--x', '2':'-w-', '3':'-wx', '4':'r--', '5':'r-x', '6':'rw-', '7':'rwx'}
FILE_DICT = {'1':'-','4':'d', '2':'c', '6':'b', '3':'l', '5':'s','7':'p'}

#无参数或只有-h
if (not args.l and not args.human) or not args.l:
    for i in sorted(os.listdir(dr)):
        print(i, end=' ')
    print()

#有-l参数
if args.l:
    for i in sorted(os.listdir(dr)):
        file_path = dr / i
        #如果没有-a，不显示隐藏文件
        if not args.all and i.startswith('.'):
            continue

        stat = os.lstat(file_path)
        st_mode = str(oct(stat.st_mode))
        mtime = datetime.datetime.fromtimestamp(stat.st_mtime).strftime('%Y-%m-%d %H:%M:%S')

        #计算文件类型
        new_file_kind = FILE_DICT[st_mode[2]]

        #计算权限
        mode=st_mode[-3:]
        new_mode = ''

        for m in mode:
            new_mode += MODE_DICT.get(m)

        #人性化显示文件大小
        if args.human:
            size = stat.st_size
            interval = 1024
            for j in ['k', 'M', 'G', 'T']:
                temp_size = stat.st_size // interval
                if temp_size > 0:
                    size = str(round(stat.st_size / interval, 1)) + j 
                else:
                    break
                interval = interval ** 2

        print('{}{} {:>2} {} {} {} {} {}'.format(new_file_kind, new_mode, stat.st_nlink, stat.st_uid, stat.st_gid, size if args.human else stat.st_size, mtime, i))
    print()

\b[0-9]{0,3}\b

^([1-9]\d\d?|\d)(?!\d)

^(?:(\d|\d{2}|1\d{2}|2[0-4]\d|25[0-5])\.){3}(\d|\d{2}|1\d{2}|2[0-4]\d|25[0-5])$

(?:(\d{1,3}).){3}(\d{1,3})

import socket
nw = socket,inet_aton('192.168.05.001')
print(nw, socket.inet_ntoa(nw))

(?<=.*ftp.*)[^/]+(\.(?:g|x)z)$

(?<=.*ftp.*/)[^/]*\.(?:gz|xz)