defchange_keys(original_dict,old_keys,new_keys):new_dict={}forold_key,new_keyinzip(old_keys,new_keys):new_dict[new_key]=original_dict.pop(old_key)new_dict.update(original_dict)returnnew_dict# 使用函数updated_dict=
def change_dict_key(dictionary, old_key, new_key): if old_key in dictionary: dictionary[new_key] = dictionary.pop(old_key) # 示例用法 my_dict = {'name': 'John', 'age': 25, 'city': 'New York'} print("原始字典:", my_dict) change_dict_key(my_dict, 'name', 'full_name')...
# 定义两个同样的关键字Namedict = {'Name': 'Python', 'Age': 7, 'Name': 'Java'}print("dict['Name']: ", dict['Name']) dict['Name']: ManniJava 2. 键必须不可变:所以可以用数,字符串或元组充当,所以用列表就不行 例子 # 关键字Name为列表dict = {['Name']:'Python', 'Age': 7};...
def__repr__(self):returnrepr((self.name,self.grade,self.age))defweighted_grade(self):return'CBA'.index(self.grade)/float(self.age)>>>student_objects=[Student('john','A',15),Student('jane','B',12),Student('dave','B',10),]>>>sorted(student_objects,key=lambda student:student.age...
thisdict ={ "brand":"Ford", "model":"Mustang", "year":1964 } print(thisdict) Try it Yourself » Dictionary Items Dictionary items are ordered, changeable, and do not allow duplicates. Dictionary items are presented in key:value pairs, and can be referred to by using the key name. ...
Return self*value. | | __setitem__(self, key, value, /) | Set self[key] to ...
forkey,valuein原始字典.items()]# 字典转列表列表[2][0]="3"# 进行修改操作修改后的字典=dict(...
所以,dict是用空间来换取时间的一种方法。 B.set Hint:注意第5点。 1.set即集合,元素互异、无序、确定。 2.创建set时,需要传入一个list,list中的重复元素自动被过滤。 set_name = set([v1, v2, ..., vn]) 3.add(key)方法传入元素,remove(key)方法删除元素。注意,add(key)如果之前key值已经存在与...
a = [('name','lustar'), ('age', 42)] dic=dict(a) dic['age'] = 22#change valueprintlen(dic)#length of adeldic['age']#delete key:ageprint'age'indic#check if age is in dicdic['age'] = 22#add 'age-22' to dicprint'age'indic ...
('cfg')) for elem in elems: tag_name = elem.tag[nslen + 2:] if elem.text is None or elem.text == 'NULL': continue node_dict[tag_name] = elem.text current_cfg = node_dict.get('current-cfg-file') if current_cfg is not None: current_cfg = os.path.basename(current_cfg) ...