49 lines
862 B
Markdown
49 lines
862 B
Markdown
---
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title: 5 个实用的 Python 小技巧
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date: 2024-02-20
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summary: 分享几个日常开发中非常实用的 Python 技巧，让你的代码更简洁。
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---
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## 1. 使用 enumerate 获取索引
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```python
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fruits = ['apple', 'banana', 'cherry']
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for i, fruit in enumerate(fruits):
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print(i, fruit)
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```
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## 2. 列表推导式
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用一行代码完成过滤和映射：
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```python
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squares = [x * x for x in range(10) if x % 2 == 0]
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```
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## 3. 使用 zip 同时遍历
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```python
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names = ['Alice', 'Bob']
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ages = [25, 30]
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for name, age in zip(names, ages):
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print(f'{name} is {age}')
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```
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## 4. 字典的 get 方法
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避免 KeyError：
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```python
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config = {'debug': True}
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level = config.get('level', 'INFO')
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```
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## 5. 使用 f-string 格式化
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```python
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name = 'World'
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print(f'Hello, {name}!')
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```
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这些小技巧虽然简单，但能让代码更 Pythonic。
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