喜歡哪裡學哪裡學習方式太隨性，所以，知識只能一點一點積累了吧

下午的時候突然想試試序列化和持久化物件，序列化有什麼趣啊一遍一遍一遍的問！想來是被之前的面試虐多了有自虐的傾向

所謂序列化嘛，就是為了儲存記憶體中的資料結構的，還有別的意義麼

序列化的過程分成兩部分，第一部分是序列化+儲存，第二部分是反序列化+恢復物件過程

儲存物件過程

nyandeMacBook-Pro:~ nyan$ python
Python 3.4.2 (v3.4.2:ab2c023a9432, Oct  5 2014, 20:42:22) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> entry = {}
>>> entry['title'] = 'local pickle'
>>> entry['id'] = b'\xB6\xAD\xC5\xF4'
>>> entry['time_limit'] = None
>>> import pickle
<p class="p1"><span class="s1">>>> with open('entry.pickle', 'wb') as f:</span></p><p class="p1"><span class="s1">... <span>	</span>pickle.dump(entry, f)</span></p><p class="p1"><span class="s1">... 
>>></span></p>
 

至此，序列化過程結束，然後在終端當前的資料夾建立了entry.pickle檔案

恢復物件過程

nyandeMacBook-Pro:~ nyan$ python
Python 3.4.2 (v3.4.2:ab2c023a9432, Oct  5 2014, 20:42:22) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pickle
>>> with open('entry.pickle', 'rb') as f:
... 	entry = pickle.load(f)
... 
>>> entry
{'title': 'local pickle', 'id': b'\xb6\xad\xc5\xf4', 'time_limit': None}
 

測試結果表明可以將序列化的物件恢復

</pre><pre name="code" class="python">Functions:

    dump(object, file)
    dumps(object) -> string
    load(file) -> object
    loads(string) -> object

>>> str = pickle.dumps(entry)
>>> print(str)
b'\x80\x03}q\x00(X\x02\x00\x00\x00idq\x01C\x04\xb6\xad\xc5\xf4q\x02X\x05\x00\x00\x00titleq\x03X\x0c\x00\x00\x00local pickleq\x04X\n\x00\x00\x00time_limitq\x05Nu.'
>>> ent = pickle.loads(str)
>>> ent
{'id': b'\xb6\xad\xc5\xf4', 'title': 'local pickle', 'time_limit': None}
 

>>> import redis
>>> r = redis.Redis('127.0.0.1', '6379', '0')
>>> r.set('entrystr', str )
True
>>> r.get('entrystr')
b'\x80\x03}q\x00(X\x02\x00\x00\x00idq\x01C\x04\xb6\xad\xc5\xf4q\x02X\x05\x00\x00\x00titleq\x03X\x0c\x00\x00\x00local pickleq\x04X\n\x00\x00\x00time_limitq\x05Nu.'
>>>