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GitHub Repository: jackfrued/Python-100-Days
 Path: blob/master/Day16-20/code/example06.py
Views: 729
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"""

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编码和解码 - BASE64

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0-9A-Za-z+/

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1100 0101 1001 0011 0111 0110

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00110001 00011001 00001101 00110110

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base64

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b64encode / b64decode

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-------------------------------------

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序列化和反序列化

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序列化 - 将对象变成字节序列(bytes)或者字符序列(str) - 串行化/腌咸菜

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反序列化 - 把字节序列或者字符序列还原成对象

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Python标准库对序列化的支持：

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json - 字符形式的序列化

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pickle - 字节形式的序列化

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dumps / loads

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"""

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import base64

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import json

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import redis

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from example02 import Person

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class PersonJsonEncoder(json.JSONEncoder):

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    def default(self, o):

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        return o.__dict__

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def main():

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    cli = redis.StrictRedis(host='120.77.222.217', port=6379, 

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                            password='123123')

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    data = base64.b64decode(cli.get('guido'))

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    with open('guido2.jpg', 'wb') as file_stream:

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        file_stream.write(data)

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    # with open('guido.jpg', 'rb') as file_stream:

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    #     result = base64.b64encode(file_stream.read())

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    # cli.set('guido', result)

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    # persons = [

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    #     Person('骆昊', 39), Person('王大锤', 18),

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    #     Person('白元芳', 25), Person('狄仁杰', 37)

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    # ]

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    # persons = json.loads(cli.get('persons'))

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    # print(persons)

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    # cli.set('persons', json.dumps(persons, cls=PersonJsonEncoder))

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if __name__ == '__main__':

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    main()

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