python 中没有i++！
1 dic = { 2 'a':5, 3 'kelv':'ooo', 4 5:2333, 5 2333:'yoo' 6 } 7 print dic[dic[dic['a']]] 8 print dic 9 10 #yoo 11 #{'a': 5, 'kelv': 'ooo', 5: 2333, 2333: 'yoo'} 12 13 dic['sss']='ooooppppp' 14 print dic 15 #{'a': 5, 'kelv': 'ooo', 5: 2333, 'sss': 'ooooppppp', 2333: 'yoo'} 16 17 step=0 18 dic ['b']=5 19 for key,value in sorted(dic.items()): 20 print key,"\t",value 21 step=step+1 22 print "step is "+str(step) 23 24 ''' 25 5 2333 26 2333 yoo 27 b 5 28 a 5 29 kelv ooo 30 sss ooooppppp 31 ''' 32 33 del dic['kelv'] 34 print dic 35 36 #{'a': 5, 'b': 5, 5: 2333, 'sss': 'ooooppppp', 2333: 'yoo'} 37 38 39 for k in set(dic.values()): 40 print k 41 42 ''' 43 5 44 2333 45 ooooppppp 46 yoo 47 ''' 48 49 new_1 = {'A':'asss','B':'bssss','C':'asss','D':'bssss'} 50 new_2 = {'lll':'asss',123:'bssss','A':'asss','B':'bssss','C':'asss','D':'bssss'} 51 new_3 = {'Appp':'asss','B':'bs'} 52 arr = [new_1,new_2,new_3] 53 for a in arr[:3]: 54 a['A'] = '1234' 55 a['D'] = 'lllllllll' 56 print arr 57 58 ''' 59 [{'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'}] 60 61 ''' 62 print arr[1].keys() 63 print arr[1].items() 64 #['A', 'C', 'B', 'D', 'lll', 123] 65 #[('A', '1234'), ('C', 'asss'), ('B', 'bssss'), ('D', 'lllllllll'), ('lll', 'asss'), (123, 'bssss')] 66 for a in arr: 67 for k,v in a.items(): 68 print k,"\t",v 69 70 ''' 71 A 1234 72 C asss 73 B bssss 74 D lllllllll 75 A 1234 76 C asss 77 B bssss 78 D lllllllll 79 lll asss 80 123 bssss 81 A 1234 82 B bs 83 D lllllllll 84 Appp asss 85 ''' 86 new_4={'kkkkk':{'opoppo':123}} 87 arr.append(new_4) 88 for value in arr[3].values(): 89 for key2 in value: 90 print key2 91 #opoppo
