Python for i in a
时间: 2023-11-19 20:50:18 浏览: 45
这个代码片段有一些问题,应该是缺少了冒号(:)。正确的写法应该是:
```python
for i in a:
# do something with i
```
这个代码片段是用来遍历列表 `a` 中的每一个元素,并将当前元素赋值给变量 `i`。然后你可以在循环体内对变量 `i` 进行操作。
相关问题
python for for i in
Sure, you can use nested for loops in Python to iterate over multiple sets of data. Here's an example:
```python
for i in range(3):
for j in range(2):
print(f"i: {i}, j: {j}")
```
This code will output:
```
i: 0, j: 0
i: 0, j: 1
i: 1, j: 0
i: 1, j: 1
i: 2, j: 0
i: 2, j: 1
```
In this example, the outer loop iterates over the values `0`, `1`, and `2`. For each iteration of the outer loop, the inner loop iterates over the values `0` and `1`. You can perform any desired operations within the nested loops.
python for i in list
"for i in list" 意思是在list中循环变量i。每次循环都会取出list中的一个元素赋值给i。
例如:
```python
numbers = [1, 2, 3, 4, 5]
for i in numbers:
print(i)
```
输出:
1
2
3
4
5
```