32 lines
		
	
	
		
			956 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			32 lines
		
	
	
		
			956 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
| ---
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| title: Exceptions and Errors Handling
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| localeTitle: 异常和错误处理
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| ---
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| ## 异常和错误处理
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| 
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| 在创建程序时,我们可能会犯错,最终会出现错误,而最糟糕的程序会停止运行, 如果我们在代码中找不到错误或错误,那会更烦人。 简单来说,错误是程序员在编写程序时避免的。 要在python中解决这个问题,我们可以使用`try`和`except`
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| 
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| 例:
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| 
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| ```shell
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| >>> try: 
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|  >>> . . . print "this is not a string "+1 
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|  >>> except: 
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|  >>> . . . print "error" 
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|  error 
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| ```
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| 
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| 如果您想从代码中更详细地获取错误消息,可以添加`except Exception as err`参数`except Exception as err`
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| 
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| ```shell
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| >>> try: 
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|  >>> . . . print "this is not a string "+1 
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|  >>> except Exception as err: 
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|  >>> . . . print "error:\n"+str(err) 
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|  error: 
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|  cannot concatenate 'str' and 'int' objects 
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| ```
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| 
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| 更多信息:
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| 
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| 错误和例外[文档](https://docs.python.org/2/tutorial/errors.html) 。 |