unit_rooms={ 3:{301:[1,80],302:[1,80],303:[2,90],304:[2,90]},
             4:{401:[1,80],402:[1,80],403:[2,90],404:[2,90]},
             5:{501:[1,80],502:[1,80],503:[2,90],504:[2,90]}
            }
            
 for i in range(3,6):
 	rooms=unit_rooms[i]
 	print(rooms)

運(yùn)行結(jié)果：

當(dāng)不知道字典的鍵時(shí)：

unit_rooms = {3:{301:[1,80],302:[1,80],303:[2,90],304:[2,90]},
             4:{401:[1,80],402:[1,80],403:[2,90],404:[2,90]},
             5:{501:[1,80],502:[1,80],503:[2,90],504:[2,90]}
            }
 for rooms in unit_rooms.values():
 	print(rooms)

運(yùn)行結(jié)果：

獲取字典的值：

for value in DictName.values():
# value的名字可以自行另取
# DictName是要遍歷的字典的名稱
# .values():是固定的用法

獲取鍵值：

for k,v in DictName.items():
#遍歷字典的鍵值對，k對應(yīng)鍵，v對應(yīng)值
#k,v 的名字可以自己取，DictName是字典名

unit_rooms = {3:{301:[1,80],302:[1,80],303:[2,90],304:[2,90]},
             4:{401:[1,80],402:[1,80],403:[2,90],404:[2,90]},
             5:{501:[1,80],502:[1,80],503:[2,90],504:[2,90]}
            }
 for sub_dict in unit_rooms.values():
# 遍歷大字典的值，即小字典sub_dict
    for room,info in sub_dict.items():
        print('房間號：%d,方向：%d,面積：%d'%(room,info[0],info[1]))

運(yùn)行結(jié)果：

方向1代表南北，方向2代表東西

把數(shù)字替換掉：

unit_rooms = {3:{301:[1,80],302:[1,80],303:[2,90],304:[2,90]},
             4:{401:[1,80],402:[1,80],403:[2,90],404:[2,90]},
             5:{501:[1,80],502:[1,80],503:[2,90],504:[2,90]}
             }
 for sub_dict in unit_rooms.values():
    for room,info in sub_dict.items():
        dire = ['', '南北', '東西']
        #建立一個(gè)列表，第0個(gè)元素為空，第1個(gè)元素為'南北'，第2個(gè)元素為'東西'
        print(dire[info[0]])

舉例：

unit_rooms = {3:{301:[1,80],302:[1,80],303:[2,90],304:[2,90]},
             4:{401:[1,80],402:[1,80],403:[2,90],404:[2,90]},
             5:{501:[1,80],502:[1,80],503:[2,90],504:[2,90]}
             }
 for sub_dict in unit_rooms.values():
    for room,info in sub_dict.items():
        dire = ['', '南北', '東西']
        print('戶室號：%d 朝向：%s 面積：%d' % (room,dire[info[0]],info[1]))

運(yùn)行結(jié)果：

附：字典dic最大值對應(yīng)的鍵

步驟：（1）用max()函數(shù)找出最大的值maxValue；（2）套用一的自定義函數(shù)

def getKey(dic, value):
    if value not in dic.values():
        return None
    result = set()
    for key in dic:
        if dic[key]==value:
            result.add(key)
    return result
 
dic = {'a':2, 'b':1, 'c':10, 'd':10}
 
maxValue=max(dic.values())
result = getKey(dic,maxValue)
 
>> {'c','d'}