这就是字典
cars = {'A':{'speed':70,
'color':2},
'B':{'speed':60,
'color':3}}
使用这个for循环
for keys,values in cars.items():
print(keys)
print(values)
它打印以下内容:
B
{'color': 3, 'speed': 60}
A
{'color': 2, 'speed': 70}
但是我希望程序像这样打印它:
B
color : 3
speed : 60
A
color : 2
speed : 70
我刚开始学习字典，所以我不知道该怎么做。
当前回答
for car,info in cars.items():
print(car)
for key,value in info.items():
print(key, ":", value)
其他回答
你有一个嵌套结构，所以你需要格式化嵌套的字典:
for key, car in cars.items():
print(key)
for attribute, value in car.items():
print('{} : {}'.format(attribute, value))
这个打印:
A
color : 2
speed : 70
B
color : 3
speed : 60
# Declare and Initialize Map
map = {}
map ["New"] = 1
map ["to"] = 1
map ["Python"] = 5
map ["or"] = 2
# Print Statement
for i in map:
print ("", i, ":", map[i])
# New : 1
# to : 1
# Python : 5
# or : 2
for car,info in cars.items():
print(car)
for key,value in info.items():
print(key, ":", value)
检查下面的一行代码:
print('\n'.join("%s\n%s" % (key1,('\n'.join("%s : %r" % (key2,val2) for (key2,val2) in val1.items()))) for (key1,val1) in cars.items()))
输出:
A
speed : 70
color : 2
B
speed : 60
color : 3
for x in cars:
print (x)
for y in cars[x]:
print (y,':',cars[x][y])
输出:
A
color : 2
speed : 70
B
color : 3
speed : 60
