How do operator.itemgetter() and sort() work?

Question

I have the following code:

# initialize
a = []

# create the table (name, age, job)
a.append(["Nick", 30, "Doctor"])
a.append(["John&         


        

Answer 1

#sorting first by age then profession,you can change it in function "fun".
a = []

def fun(v):
    return (v[1],v[2])

# create the table (name, age, job)
a.append(["Nick", 30, "Doctor"])
a.append(["John",  8, "Student"])
a.append(["Paul",  8,"Car Dealer"])
a.append(["Mark", 66, "Retired"])

a.sort(key=fun)


print a