dict1 = dict()
print dict1

dict2 ={'a':1,'b':2}
print(dict2)

dict2['a'] = 1000
print dict2


for i in dict2:
    dict1[dict2[i]]= i

print dict1

print dict1.clear()
print dict1

print dict2.items()
print dict2.keys()

print("hello "*5)

