>>> adict = dict()
>>> dict(['ab','cd'])
{'a': 'b', 'c': 'd'}
>>> adict
{}
>>> bdict = dict([('name','bob'),('age','25')])
>>> bdict
{'name': 'bob', 'age': '25'}
>>> {}.fromkeys(['zhangsan','lisi','wangwu'],11)    #多個key對應一個值
{'zhangsan': 11, 'lisi': 11, 'wangwu': 11}
>>> for key in bdict:   #迴圈列印key和value
...     print('%s:%s' % (key,bdict[key]))
...
name:bob
age:25
>>> print('%(name)s:%(age)s' % bdict)
bob:25
>>> bdict['name'] = 'tom'   #字典有相同的key，則修改這個key對應的value
>>> bdict['email'] = '
 
[email protected]'   #沒有對應的key，新加對應的鍵值對
>>> bdict
{'name': 'tom', 'age': '25', 'email': '[email protected]'}
>>> del bdict['email']  #刪除對應的key和value
>>> bdict
{'name': 'tom', 'age': '25'}
>>> bdict.pop('age')    #彈出對應的key和value
'25'
>>> bdict
{'name': 'tom'}
>>> bdict.clear()   #清空字典
>>> bdict
{}

>>> adict = dict([('name','bob'),('age',25)])   #定義字典
>>> adict
{'name': 'bob', 'age': 25}
>>> len(adict)  #檢視字典長度
2
>>> hash(10)
10
>>> adict.keys()    #檢視字典裡的所有key
dict_keys(['name', 'age'])
>>> adict.values()  #檢視字典裡的所有value
dict_values(['bob', 25])
>>> adict.items()
dict_items([('name', 'bob'), ('age', 25)])
>>> adict.get('name')
'bob'
>>> print(adict.get('qq'))    #沒有這個key，返回None
None
>>> print(adict.get('qq','not found'))    #沒有這個key，返回指定值
not found
>>> print(adict.get('age','not found'))   #有這個key，返回key對應的值
25
>>> adict.update({'phone':'13449065521'})
>>> adict
{'name': 'bob', 'age': 25, 'phone': '13449065521'}