python lesson 2

append

insert, You can insert "Art", and insert courses_2( courses_2 = [  ])

insert(0, courses_2);

extend

pop

remove

poped=courses.pop()= what has been removed.

reverse

sort(can combine with reverse)

sorted(new variable)

max, min, sum.

index in

string

lists :modify[]

tuples: can't modify()

sets: don't really care about the order{} membership text.

.intersection()

.union()

.difference()