for in enumerate():
时间: 2023-05-02 07:05:04 浏览: 442
这是Python中用来遍历一个可迭代对象的循环语句,其中enumerate()函数用于获取对象中元素的索引和值。循环语句的格式为:“for 索引, 值 in enumerate(可迭代对象)”,可以在循环中使用索引和值进行操作。
相关问题
for in enumerate
'for in enumerate' is a Python loop statement that allows you to iterate over an iterable while also keeping track of the current index of each element. Here's an example usage:
```python
fruits = ['apple', 'banana', 'cherry']
for index, fruit in enumerate(fruits):
print(index, fruit)
```
Output:
```
0 apple
1 banana
2 cherry
```
In this example, `enumerate(fruits)` returns an iterator that produces tuples containing the index and the corresponding fruit from the `fruits` list. The `for` loop then iterates over each tuple, unpacking it into the variables `index` and `fruit`, and prints them out.
python for in enumerate
在Python中,可以使用`for`循环和`enumerate()`函数来同时遍历列表(或其他可迭代对象)中的元素和它们的索引。`enumerate()`函数返回一个由元素索引和元素值组成的迭代器。
下面是一个使用`for`和`enumerate()`的示例:
```python
fruits = ['apple', 'banana', 'orange']
for index, fruit in enumerate(fruits):
print(f"Index: {index}, Fruit: {fruit}")
```
输出:
```
Index: 0, Fruit: apple
Index: 1, Fruit: banana
Index: 2, Fruit: orange
```
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