2025-09-30 11:56:06 +08:00
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## **array** – 数字数据数组
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**array** 模块定义了一个对象类型，它可以简洁地表示基本值的数组：字符、整数、浮点数。支持代码格式: b, B, h, H, i, I, l, L, q, Q, f, d (最后2个需要支持浮点数)。
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### 构造函数
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#### **class array.array**(typecode[, iterable])
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用给定类型的元素创建数组。数组的初始内容由 iterable 提供，如果没有提供，则创建一个空数组。
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```
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typecode：数组的类型
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iterable：数组初始内容
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```
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示例：
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```python
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>>> import array
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>>> a = array.array('i', [2, 4, 1, 5])
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>>> b = array.array('f')
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>>> print(a)
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array('i', [2, 4, 1, 5])
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>>> print(b)
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array('f')
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```
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### 方法
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#### **array.append**(val)
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将一个新元素追加到数组的末尾。
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示例：
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```python
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>>> a = array.array('f', [3, 6])
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>>> print(a)
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array('f', [3.0, 6.0])
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>>> a.append(7.0)
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>>> print(a)
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array('f', [3.0, 6.0, 7.0])
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```
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#### **array.extend**(iterable)
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将一个新的数组追加到数组的末尾，注意追加的数组和原来数组的数据类型要保持一致。
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示例：
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```python
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>>> a = array.array('i', [1, 2, 3])
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>>> b = array.array('i', [4, 5])
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>>> a.extend(b)
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>>> print(a)
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array('i', [1, 2, 3, 4, 5])
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```
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更多内容可参考 [array](http://docs.micropython.org/en/latest/pyboard/library/array.html) 。
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