list and tuple

list:

using []

ex:

a=[1,2,3]

+:

[1,2] +[3,4]

--> [1,2,3,4]

sort()

reverse()

get column from list:

ex:

a=[ [1,2], [3,4] ]

b=[ row[1] for row in a]

--> b= [2,4]

row[1] means second column

Hence, second column for each row

append:

tuple:

use ()

ex:

a= (1,2,3)

It is like list , but it is immutable