Python 3辞書の遍歴常用操作を実現

#   30        
from random import randint

data = {x: randint(60,100) for x in range(1,31)}

#      key

for key in data.keys():
    print(key)

for key in data:
    print(str(key)+':'+str(data[key]))


#     value

for value in data.values():
    print(value)

#       
for item in data.items():
    print(item)

#  key-value
for key,value in data.items():
    print(key,value)