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							|  |  |  |  | title: Python Abs Function | 
					
						
							|  |  |  |  | localeTitle: Python Abs函数 | 
					
						
							|  |  |  |  | --- | 
					
						
							|  |  |  |  | `abs()`是Python 3中的内置函数,用于计算任何数字的绝对值。数字的绝对值“仅表示数字与0之间的距离” 1它需要一个参数`x` 。参数甚至可以是一个[复数](https://docs.python.org/3.0/library/cmath.html) ,在这种情况下,它的[模数](http://www.mathcentre.ac.uk/resources/sigma%20complex%20number%20leaflets/sigma-complex9-2009-1.pdf)被返回。 | 
					
						
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							|  |  |  |  | ## 论据
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							|  |  |  |  | 它需要一个参数`x` - 一个整数,或十进制,或一个复数。 | 
					
						
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							|  |  |  |  | ## 回报价值
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							|  |  |  |  | 返回值为正数。即使传递了复数,也会返回其大小,按复数代数计算。 | 
					
						
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							|  |  |  |  | ## 代码示例
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							|  |  |  |  | ```python | 
					
						
							|  |  |  |  | print(abs(3.4)) # prints 3.4  | 
					
						
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										 |  |  |  | print(abs(-6)) # prints 6  | 
					
						
							|  |  |  |  | print(abs(3 + 4j)) # prints 5, because |3 + 4j| = 5  | 
					
						
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										 |  |  |  | ``` | 
					
						
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							|  |  |  |  | [🚀运行代码](https://repl.it/CL8k/0) | 
					
						
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							|  |  |  |  | [官方文件](https://docs.python.org/3/library/functions.html#abs) | 
					
						
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							|  |  |  |  | ### 来源
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										 |  |  |  | 1.  [数学很有趣。访问时间:2017年10月25日](https://www.mathsisfun.com/numbers/absolute-value.html) |