# hello.py 
# 这是老早写的。不过今天加入了Pickle，然后润色了一下。 
# 可能有点无聊（不推荐使用） 
 
import pickle 
import os.path 
 
def search(x, data): 
  for k, d in enumerate(data): 
    if x == d['name']: 
      return k, d 
 
def save_data(A,pklname): 
  with open(pklname, 'wb') as pkl: 
    pickle.dump(A, pkl) 
 
def load_data(pklname): 
  with open(pklname, 'rb') as pkl: 
    return pickle.load(pkl) 
 
# communicating with computer 
data=[] if not os.path.isfile('data') else load_data('data') 
 
while True: 
  print('Welcome! [type "quit" if you want to quit.]') 
  name=input('--What is your name"data".]'%y) 
  save_data(data, 'data') 
else: 
  print('I am sorry. I can not understand what you said. data are not saved.') 

# hello.py 
 
import pickle 
import os.path 
 
def search(x, data): 
  for k, d in enumerate(data): 
    if x == d['name']: 
      return k, d 
 
class Hello: 
  def __init__(self, name='', data=None): 
    self.name = name 
    self.data = data 
 
  def __getstate__(self): 
    return self.data 
 
  def __setstate__(self, data): 
    self.data = data 
 
  def mainloop(self): 
 
    while True: 
      print('Welcome! [type "quit" if you want to quit.]') 
      name=input('--What is your name"data.pkl".]'%y) 
      with open('data.pkl', 'wb') as fo: 
        pickle.dump(self, fo) 
    else: 
      print('I am sorry. I can not understand what you said. data are not saved.') 
    # communicating with computer 
 
 
try: 
  with open('data.pkl', 'rb') as fo: 
    hello=pickle.load(fo) 
except: 
  hello=Hello('ai',[]) 
 
hello.mainloop()