Python: What does the use of [] mean here?

Question

What is the difference in these two statements in python?

var = foo.bar

and

var = [foo.bar]

I think it i

Answer 1

Yes, it's making a list containing one element, foo.bar.

If foo.bar is [1,2], you indeed get [[1,2]].

For instance,

>> a=[]
>> a.append([1,2])
>> a[0] 
[1,2]
>> b=[[1,2]]
>> b[0]
[1,2]

To elaborate a bit more on that exact example,

>> class Foos:
>>   bar=[1,2]
>> foo=Foos()
>> foo.bar
[1,2]
>> a=[foo.bar]
>> a
[[1,2]]
>> a[0]
[1,2]