list and tuple: you can change list but tuples
mostly we use lists but for dictionary keys tuple is a must.
Python number or indexing from 0 to the num-1
Slicing:
step: number [0:10:3], 3 is the step.
concatenate sequences with different type is not possible.
multiplication
lists
tuples: immutable sequences
cmp(x,y):compare
len(seq):length of the sequence
list(seq): convert the sequence to list
tuple(seq): convert the sequence to tuple
max(args)
min(args)
reversed(seq)
sorted(seq)