更改字典的所有值

Question

如何將字典中的所有值乘以集數？

dictionary = {'one': 1, 'two': 2, 'three': 3} 
number = 2 

我想number使得第二字典創建一個名爲乘以所有dictionary值的dictionary2

創建應該是這個樣子的詞典：

dictionary2 = {'one': 2, 'two': 4 'three': 6} 

Answer 1

使用字典理解

>>> dictionary = {'one': 1, 'two': 2, 'three': 3} 
>>> number = 2 
>>> {key:value*number for key,value in dictionary.items()} 
{'one': 2, 'three': 6, 'two': 4} 

（注意順序是不一樣的字典本身是無序的）

作爲一份聲明中

dictionary2 = {key:value*number for key,value in dictionary.items()} 

如果你想要一個簡單的版本，你可以使用一個for循環

dictionary = {'one': 1, 'two': 2, 'three': 3} 
number = 2 
dictionary2 = {} 

for i in dictionary: 
    dictionary2[i] = dictionary[i]*number 

print(dictionary2)