Python编程快速上手——让繁琐工作自动化第八章实践题

##8.9.1

import shelve, pyperclip, sys

mcbShelf = shelve.open('mcb')
if len(sys.argv) == 3:
    if sys.argv[1].lower() == 'save':
        mcbShelf[sys.argv[2]] = pyperclip.paste()
    elif sys.argv[1].lower() == 'delete':
        del mcbShelf[sys.argv[2]]

elif len(sys.argv) == 2:
    if sys.argv[1].lower() == 'list':
        pyperclip.copy(str(list(mcbShelf.keys())))
    if sys.argv[1].lower() == 'delete':
        del mcbShelf[:]
    else:
        pyperclip.copy(mcbShelf[sys.argv[1]])
mcbShelf.close()

##8.9.2

import re, os

print('欢迎进入《疯狂填词》游戏')
lujing = input('请输入本次游戏文件路径(例如：C:\\Users\\lucky\\biancheng\\tianci.txt):\n')

while os.path.isfile(lujing) == False:
    lujing = input('输入信息有误，请重新输入：\n')

wenjian_open = open(lujing)
wenjian_read = wenjian_open.read()
wenjian_open.close()

zhengze1 = re.compile(r'[A-Z]{2,}')
xutihuan = zhengze1.findall(wenjian_read)

for i in xutihuan:
    if i[0] == 'A':
        tianci = input('Enter an ' + i + ':\n' )
        while tianci.isalnum() == False:
            tianci = input('填词不可为空:\n')
    else:
        tianci = input('Enter a ' + i + ':\n' )
        while tianci.isalnum() == False:
            tianci = input('填词不可为空:\n')
    zhengze2 = re.compile(r''+i+'')
    wenjian_read = zhengze2.sub(tianci, wenjian_read)

print(wenjian_read)
wenjian_new = re.compile(r'[A-Za-z0-9]+\.txt').search(lujing).group().rstrip('.txt')+ '_new.txt'
open(wenjian_new, 'w').write(wenjian_read)

##8.9.3

import re, os

lujing = input('请输入目录路径：')
while os.path.isdir(lujing) == False:
    lujing = input('路径无效，请重新输入：')

wenjian_list = os.listdir(lujing)
shaixuan = input('请输入本次筛选的正则表达式: \\')
for a in wenjian_list:
    wenjian_txt = re.compile(r'.+\.txt').search(a)
    if wenjian_txt == None:
        continue
    else:
        wenjian_txt_open = open(os.path.join(lujing,wenjian_txt.group())).read()
        shaixuan_txt = re.compile(r'\%s' %shaixuan).findall(wenjian_txt_open)
        print('\n'.join(shaixuan_txt))

PS：在8.9.3代码中，只能在用户输入的正则表达式是可读取的情况下运行，否则程序将报错，暂无法解决，待后续更新！