user = { 'basket' : [1,2,3], 'greet' : 'hello', 'x' : True, 'age' : 20 } user2 = dict(name='Jon Jones') print(user.get('age', 0)) print(user.get('basket', 0)) print('basket' in user) print('age' in user.keys()) print(user.items()) print(user.values()) print(user.keys()) user2 = user.copy() print(user.update({'age': 55})) print(user) test1 = [{'name':'peter', 'age':11}, {'name':'john','age':12}] print(test1[1].get('name')) print(test1[1].get('age')) a = [1,2,3] print('************ list pop 123*******************') a.pop() print(a) print('************ list pop 123*******************') a.append('a') a.insert(1, 'z') a[2] = 9 b = a.copy() #b = a[::] b.append('y') print(a) print(b) a = {1,2,3} print('************ set pop 123*******************') a.pop() print(a) print('************ set pop 123*******************') a.update(['china', 'taiwan']) #b = a[::] error in slice for set b = a.copy() b.add('singapore') print(a) print(b) a = 1,2,3 print('************ tuple pop 123*******************') print(a) print('************ tuple pop 123*******************') b = a[::] #b = a.copy() # error for copy () in tuple print(a) print(b) for i in range(4): for j in range(3): print(i, j)