`dict.fromkeys` without values as references to the same object-CodePudding

I need to create a dictionary with Locks as values, but I can't use dict.fromkeys because it creates only one Lock and multiple references:

my_dict = dict.fromkeys(list_of_keys, Lock())

So I do it like:

my_dict = dict((my_key,Lock()) for my_key in list_of_keys)

But I wonder if it's possible to use dict.fromkeys in any way,

CodePudding user response：

It's not possible. dict.fromkeys() puts the same value (same object) for each element.

But at least, you could use a dict comprehension to make it look nicer:

my_dict = {my_key: Lock() for my_key in list_of_keys}