[Tutor] Final review

[Scott W Dunning]

Hello, I am new to python and have a final review coming up and was hoping you could help me answer a few questions I came across while studying.


So, I get a little confused about lists sometimes.  This one is a little hard to make heads or tails of.  I get confused about how to tell how many lists are within one list like the one below.   How many lists are located inside alist is it 1 or 2, 3??  Also, do spaces count as an index in lists?  

>>> alist = [3, 67, "cat”, [56, 57, “dog”], [], 3.14, False]
>>> print alist[4:]
[[], 3.14, False]


The ouput for below is 2 when it seems like there should be 3 lists located inside x.  Is it [10,20] that is not consider inside of x?    Any tips on how to tell how to spot them more clearly?  

x = ['a', [2.0, 5, [10, 20]]]
print len(x)



I have a few more questions too but I figured I send this email for now while compile my other questions you guys can hopefully help to shed light on. 

Thanks for any help!!

Scott