Dictionary eg in python

dict1= {"name":"venu", "company":"cig...", "proj": "BOA"}

print dict1.has_key("proj")
print dict1.__len__()
print dict1.keys()
print dict1.values()
print dict1
print dict1["name"]
print str(dict1)
print "dictionary size: ", len(dict1)
i=10
j=11

def sum1(a, b):
    return a+b

def mul1(a,b):
    return a*b

def substract(a,b):
    return a-b

def div(a,b):
    return a/b

dict2= {1: sum1(i, j),
        2: mul1(i, j),
        3: substract(i, j),
        4: div(i, j)
        }

print dict2[1]
print dict2[2]
print dict2[3]
print dict2[4]


l1= [10,20, 30, 40]
print 10 in l1

print id(l1)
print "size: "+ str(l1.__len__())
l2= l1
l1.append(50)

print l1.__len__()

print l2.__len__()
print id(l2)


x= 10
if x:
    print x
else:
    print "T"


print "testing",
print l1,
print "hello"