---
# System prepended metadata

title: Python學習日記 List的操作
tags: [Python學習]

---

---
tags: Python學習
---
<style>
    .topic{
        color:#fa7f20;
        font-weight:bold;
    }
</style>

# Python學習日記 List的操作

## <span class="topic">index()</span>
#### 取得陣列元素的索引值
```python=
numList = [1, 2, 3]
numList.index(2)

>> 1
```
## <span class="topic">count()</span>
#### 取得陣列元素出現的次數，若不存在於陣列中則回傳 0
```python=
numList = [1, 2, 3]
numList.index(2)

>> 1
```


## <span class="topic">append()</span>
#### 將元素放入陣列中
```python=
numList  = [1, 2, 3]
numList2 = [4, 5, 6]
numList.append(numList2)
numList

>> [1, 2, 3, [4, 5, 6]]
```
## <span class="topic">extend()</span>
#### 將陣列連接陣列
```python=
numList  = [1, 2, 3]
numList2 = [4, 5, 6]
numList.extend(numList2)
numList

>> [1, 2, 3, 4, 5, 6]
```


