python从入门到放弃-06-字典

####字典#### 字典是python中唯一的映射类型，key- value，字典对象可变，key不可变对象 ####字典的定义#### dic = {'x':'y','z':num} ####内建方法#### dic = {}.fromkeys(('x','y'),'z') ####字典值的访问#### 通过对字典key的访问 遍历循环 ####字典key-value添加#### dic[ke

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