alex = {
    'height'  :175,
    'age'     :14,
    'school'  :'py',
    'gender'  :'male',
    'birthday':1021 
    }

for k in alex.keys() :
    print(k)
for v in alex.values() :
    print(v)
for k , v in alex.items() :
    print(k , v)