字典|字典和数组嵌套|keys()|value()|item()|del

python 中没有i++！

dic = {
    'a':5,
    'kelv':'ooo',
    5:2333,
    2333:'yoo'
    }
print dic[dic[dic['a']]]
print dic

#yoo
#{'a': 5, 'kelv': 'ooo', 5: 2333, 2333: 'yoo'}

dic['sss']='ooooppppp'
print dic
#{'a': 5, 'kelv': 'ooo', 5: 2333, 'sss': 'ooooppppp', 2333: 'yoo'}

step=0
dic ['b']=5
for key,value in sorted(dic.items()):
    print key,"	",value
    step=step+1
print "step is "+str(step)

'''
5       2333
2333    yoo
b       5
a       5
kelv    ooo
sss     ooooppppp
'''

del dic['kelv']
print dic

#{'a': 5, 'b': 5, 5: 2333, 'sss': 'ooooppppp', 2333: 'yoo'}


for k in set(dic.values()):
    print k

'''
5
2333
ooooppppp
yoo
'''

new_1 = {'A':'asss','B':'bssss','C':'asss','D':'bssss'}
new_2 = {'lll':'asss',123:'bssss','A':'asss','B':'bssss','C':'asss','D':'bssss'}
new_3 = {'Appp':'asss','B':'bs'}
arr = [new_1,new_2,new_3]
for a in arr[:3]:
    a['A'] = '1234'
    a['D'] = 'lllllllll'
print arr

'''
[{'A': '1234', 'C': 'asss', 'B': 'bssss', 'D': 'lllllllll'}, {'A': '1234', 'C': 'asss', 'B': 'bssss', 'D': 'lllllllll', 'lll': 'asss', 123: 'bssss'}, {'A': '1234', 'B': 'bs', 'D': 'lllllllll', 'Appp': 'asss'}]

'''
print arr[1].keys()
print arr[1].items()
#['A', 'C', 'B', 'D', 'lll', 123]
#[('A', '1234'), ('C', 'asss'), ('B', 'bssss'), ('D', 'lllllllll'), ('lll', 'asss'), (123, 'bssss')]
for a in arr:
    for k,v in a.items():
        print k,"	",v

'''
A       1234
C       asss
B       bssss
D       lllllllll
A       1234
C       asss
B       bssss
D       lllllllll
lll     asss
123     bssss
A       1234
B       bs
D       lllllllll
Appp    asss
'''
new_4={'kkkkk':{'opoppo':123}}
arr.append(new_4)
for value in arr[3].values():
    for key2 in value:
        print key2
#opoppo