《Python编程快速上手》8.9.1实

#!python3
#运行 py mcb.pyw save spam ，剪贴板内容就关键字spam保存
#py mcb.pyw spam 加载spam 对应内容到剪贴板
#py mcb.pyw list 关键字列表到剪贴板

#扩展多重剪贴板：
#增加delete <keyword>，从shelf中删除相应键值
#delete all 清空
import sys,pyperclip,shelve

mcbShelf=shelve.open(r'I:\mcb')

#save clipboasr content:
if len(sys.argv) == 3:
    if sys.argv[1].lower()=='save' and sys.argv[2].lower() != 'all':
        mcbShelf[sys.argv[2]] = pyperclip.paste()
    elif sys.argv[1].lower()=='delete' and sys.argv[2].lower()=='all':
        mcbShelf.clear()
    elif sys.argv[1].lower()=='delete' and sys.argv[2] in mcbShelf:
        del mcbShelf[sys.argv[2]]    
elif len(sys.argv) == 2:
    #List keywords and load content.
    if sys.argv[1]=='list':
        pyperclip.copy(str(list(mcbShelf.keys())))
    elif sys.argv[1] in mcbShelf:
        pyperclip.copy(mcbShelf[sys.argv[1]])
    else:
        print("参数错误")
else:
    print('wrong')

mcbShelf.close()