pythonenumerate()
时间: 2024-01-05 15:19:48 浏览: 37
以下是使用enumerate函数的示例:
```python
# 示例1:使用for循环遍历枚举对象
l1 = ["小米", "小华", "小刘"]
for i, value in enumerate(l1):
print(i, value)
# 输出:
# 0 小米
# 1 小华
# 2 小刘
# 示例2:将枚举对象转化为列表、集合、元组
l1 = ["小米", "小华", "小刘"]
a = list(enumerate(l1)) # 转为列表
print(a)
b = set(enumerate(l1)) # 转为集合
print(b)
c = tuple(enumerate(l1)) # 转为元组
print(c)
```
相关问题
python enumerate
The `enumerate()` function in Python is used to associate an index with each element of an iterable. It returns an enumerate object which contains tuples of the form `(index, element)` for each element in the iterable.
Syntax:
```python
enumerate(iterable, start=0)
```
Parameters:
- `iterable`: an iterable object (list, tuple, string, etc.) whose elements need to be enumerated.
- `start`: (optional) the starting index of the enumeration. Default value is `0`.
Example:
```python
fruits = ['apple', 'banana', 'cherry']
for index, fruit in enumerate(fruits):
print(index, fruit)
```
Output:
```
0 apple
1 banana
2 cherry
```
In the above example, the `enumerate()` function is used to associate an index with each fruit in the `fruits` list. The resulting enumerate object is then iterated over using a for loop, and the index and fruit values are printed for each iteration.
Python enumerate
好的,你的问题是:
Python中的enumerate是什么?
回答:
在Python中,enumerate()是一个内置函数,它将一个可迭代对象(如列表、元组或字符串)作为输入,并返回一个枚举对象。枚举对象包含输入对象中每个元素的索引和值。
示例代码:
```
fruits = ['apple', 'banana', 'orange']
for index, fruit in enumerate(fruits):
print(index, fruit)
```
输出:
```
0 apple
1 banana
2 orange
```
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