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leeoo merged 1 commit into from
Sep 16, 2018
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Update 第03章 Python的数据结构、函数和文件.md #3

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2 changes: 1 addition & 1 deletion 第03章 Python的数据结构、函数和文件.md
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Expand Up @@ -1261,7 +1261,7 @@ S ['Steven']
![表3-2 一些有用的itertools函数](http://upload-images.jianshu.io/upload_images/7178691-111823d8767a104d.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

## 错误和异常处理
优雅地处理Python的错误和异常是构建健壮程序的重要部分。在数据分析中，许多函数函数只用于部分输入。例如，Python的float函数可以将字符串转换成浮点数，但输入有误时，有``ValueError``错误：
优雅地处理Python的错误和异常是构建健壮程序的重要部分。在数据分析中，许多函数只用于部分输入。例如，Python的float函数可以将字符串转换成浮点数，但输入有误时，有``ValueError``错误：

```python
In [197]: float('1.2345')
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