Why list(dict.keys()) does not work?

[landlord1984]

dict={'a':'aaa','b':'bbb','c':'ccc'}

list(dict.keys())

TypeError                                 Traceback (most recent call last)
<ipython-input-60-be97bb392967> in <module>()
----> 1 list(dict.keys())

TypeError: 'list' object is not callable

I want to get a list of the keys of a dictionary for further manipulation. But don't know why this does not work. Somebody here:http://stackoverflow.com/questions/17322...t-indexing
suggested they can do by this way, but it does not work for me.

Another question is: Can I access dictionary by index instead of key?

Thanks,

L