在python字典中，如何显示字典项的键和值的内容？

Question

city = {"New York": 2, "Minnespolis": 2, 'thing ' : 3}
print(city)
for key in city:
    print(city)

Answer 1

下面我为您提供两种选择。 此外，这个iterable被称为字典而不是目录，尽管这可能是一个输入错误，我想指出这一点

选项1 您可以使用dict.items()

city = {"New York": 2, "Minnespolis": 2, 'thing ' : 3}
for k,v in city.items():
    print(f'key: {k}')
    print(f'value: {v}')

---

选项二use dict[key]

city = {"New York": 2, "Minnespolis": 2, 'thing ' : 3}
for k in city:
    print(f'key: {k}')
    print(f'value: {city[k]}')

---

输出

key: New York
value: 2
key: Minnespolis
value: 2
key: thing 
value: 3

Answer 2

您的意思是通过键访问值吗

city = {"New York": 2, "Minnespolis": 2, 'thing ' : 3}
print(city)
for key in city:
    print(city[key])