# Create New Dictionary Object myDictionary = { "id": 1, "name": "Hardik Savani", "email": "hardik@gmail.com" } # Get First Item from Dictionary firstPair = next(iter((myDictionary.items())) ) print('First Key Value Pair of Dictionary is:') print(firstPair) print('First Key: ...
In [1]: def custom_cmp(item1, item2): ...: return cmp((item1[1], item1[3]), (item2[1], item2[3])) ...: In [2]: a_list = ['Tommy', 'Jack', 'Smith', 'Paul'] In [3]: a_list.sort(custom_cmp) In [4]: a_list Out[4]: ['Jack', 'Paul', 'Smith', 'Tomm...
if item==1: if name in addressBook: print(name,':',addressBook[name]) continue else: print("该联系人不存在!") if item==2: if name in addressBook: print("您输入的姓名在通讯录中已存在-->>",name,":",addressBook[name]) isEdit=input("是否修改联系人资料(Y/N):") if isEdit=='Y'...
key, /) | Return key in self. | | __delitem__(self, key, /) | Delete...
# 提取第一个学生的成绩 first_student_score = students_scores[0]['score'] print(first_student_score) # 输出: 85 通过键提取 如果你知道特定学生的名字,可以直接查找其分数: 代码语言:txt 复制 # 查找Bob的分数 bob_score = next((student['score'] for student in students_scores if student['name...
Note:We can also use theget()method to access dictionary items. Add Items to a Dictionary We can add an item to a dictionary by assigning a value to a new key. For example, country_capitals = {"Germany":"Berlin","Canada":"Ottawa", ...
names=["Hard Disk","Laptop","RAM"]itemDictionary=dict(zip(ItemId,names))print(itemDictionary)#...
(self, item): key, value = item if key in self.data: self.data.move_to_end(key) self.data[key] = value def dequeue(self): try: return self.data.popitem(last=False) except KeyError: print("Empty queue") def __len__(self): return len(self.data) def __repr__(self): return ...
In the first call to sorted(), you use the dictionary as an argument. This results in a list of sorted keys. Next, you use the .values() method to get a list of sorted values.Summing Dictionary Values: sum() You can also use the built-in sum() function with dictionaries. For exam...
/usr/bin/python3tinydict= {'Name':'Runoob','Age':7,'Class':'First'}print("tinydict['Alice']:",tinydict['Alice']) 以上实例输出结果: Traceback(most recent calllast):File"test.py",line5,in<module>print("tinydict['Alice']: ",tinydict['Alice'])KeyError:'Alice'...