在python中，詞典綜合提供了一種生成新詞典的簡潔方法。儘管它們與列表綜合相似，但存在一些顯著差異。

與問題所暗示的不同，您無法為鑰匙創建字典理解。您必須明確指定鍵和值。 For example:

d = {n: n**2 for n in range(5)}

This creates a dictionary with keys from 0 to 4 and values equal to the square of the corresponding key.

Setting a Single Value for Multiple Keys

To set the same value for multiple keys, you can use the following syntax:

d = {n: n**2 for n in range(5)}

d = {n: True for n in range(5)}

This creates a dictionary with keys from 0 to 4, all with the value True.

Setting Multiple Values for Multiple Keys

As the question points out, it is not possible to specify multiple values for the使用字典理解的相同鍵。為了實現這一目標，您可以使用循環手動分配值或創建單獨的詞典，然後使用update（）更新現有的詞典：

d = {n: True for n in range(5)}