如何在Python中正确编写for循环

for 变量 in 可迭代对象:
    # 执行语句块

fruits = ['apple', 'banana', 'orange']
for fruit in fruits:
    print(fruit)

apple
banana
orange

message = 'Hello, World!'
for char in message:
    print(char)

H
e
l
l
o
,
 
W
o
r
l
d
!

person = {'name': 'Alice', 'age': 25, 'city': 'New York'}
for key, value in person.items():
    print(key, value)

name Alice
age 25
city New York