dic = {'Tom': 90, 'Mary':56, 'Bob':77, 'Alan': 80, 'Sunny':100}
lis = [90,56,77,80,100]
students = [('Tom', 90), ('Mary', 56), ('Bob', 77), ('Alan', 80), ('Sunny', 100)]

def temp_function(list):
    print(list)
    return list[0]

'''
print(dic)
print(dic.items())
print(dic.keys())
print(dic.values())
'''
print('dic sorted:')
print(sorted(dic.items(), key = temp_function))

print('lis sorted:')
print(sorted(lis))

print('students sorted:')
print(sorted(students, key= temp_function))

#lambda
print('lambda')
print(sorted(dic.items(), key = lambda x : x[1]))