How to return dictionary keys as a list in Python?

Question

In Python 2.7, I could get dictionary keys, values, or items as a list:

>>> newdict = {1:0, 2:0, 3:0}

>>> newdict.keys() [1, 2, 3]

Now, in Python >= 3.3, I get something like this:

>>> newdict.keys()

dict_keys([1, 2, 3])

So, I have to do this to get a list:

newlist = list()

for i in newdict.keys():

newlist.append(i)

I'm wondering, is there a better way to return a list in Python 3?

 

Answer 1

The better Pythonic way is to use the list(newdict.keys()), this function will convert the newdict_keys object to a list. That will act as a list for most purposes below is the code that illustrates the use of:-

newdict = {1:0, 2:0, 3:0}

print(list(newdict.keys())