python: when making a list of lists do i have to contain them in square brackets? -


so whats difference between: 

x = [1,1,1], [1,1,1], [1,1,1], [1,1,1]

and 

x = [[1,1,1], [1,1,1], [1,1,1], [1,1,1]]

do square brackets around second option anything?

x = [1,1,1], [1,1,1], [1,1,1], [1,1,1]

will create tuple lists

x = [[1,1,1], [1,1,1], [1,1,1], [1,1,1]]

will create lists of list

i.e.)

x = [1,1,1], [1,1,1], [1,1,1], [1,1,1] x ([1, 1, 1], [1, 1, 1], [1, 1, 1], [1, 1, 1]) type(x) <type 'tuple'>  "a","b" ('a', 'b')

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