Python Dictionary fromkeys方法用法及代码示例 Python 的dict.fromkeys(~)方法从提供的可迭代对象和值返回一个新字典。 参数 1.iterable|any 用作新字典键的可迭代对象或元素。 2.value|any|optional 设置字典每个元素的值。默认为None。 返回值 来自提供的迭代和值的新字典。 例子 基本用法 要从元组my_cars创建...
Therefore, using the fromkeys() method, each character of the string will act as a key in the resultant dictionary. The value 'King' is assigned to all the keys.Open Compiler Animal = 'Lion' value = 'King' print('The string value is: ', value) d = dict.fromkeys(Animal, value) ...
代码2:演示可变对象的行为。 # Python 3 code to demonstrate# behaviour with mutable objects# initializing sequence and listseq = {'a','b','c','d','e'} lis1 = [2,3]# usingfromkeys() to convert sequence to dict# using conventional methodres_dict = dict.fromkeys(seq, lis1)# Printing...
In the above example, we have used thefromkeys()method to create the dictionary with the given set ofkeysand stringvalue. Here, thefromkeys()method creates a new dictionary namedvowelsfromkeysandvalue. All the keys of the dictionary are assigned with the same value. Example 2: fromkeys() wit...