python中遍历的方法有哪些

python中实现遍历的方法：1.使用iter()函数遍历；2.使用enumerate()函数遍历；3.使用range()和len()函数遍历；

python中实现遍历的方法有以下几种

1.使用iter()函数遍历

cities = ["Guangzhou","Beijing","Shanghai","Nanjing"]
for city in iter(cities):
print(city)

输出结果为：

Guangzhou
Beijing
Shanghai
Nanjing

2.使用enumerate()函数遍历

cities = ["Guangzhou","Beijing","Shanghai","Nanjing"]
for i,city in enumerate(cities):
print(i+1,city)

输出结果为：

1 Guangzhou
2 Beijing
3 Shanghai
4 Nanjing

3.使用range()和len()函数遍历

cities = ["Guangzhou","Beijing","Shanghai","Nanjing"]
for i in range(len(cities)):
print(i+1,cities[i])

输出结果为：

1 Guangzhou
2 Beijing
3 Shanghai
4 Nanjing

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