问题：如何将负数转换为正数？
如何在Python中将负数转换为正数？（并保持积极的态度。）
How can I convert a negative number to positive in Python? (And keep a positive one.)
回答 0
>>> n = -42
>>> -n # if you know n is negative
42
>>> abs(n) # for any n
42
不要忘记检查文档。
>>> n = -42
>>> -n # if you know n is negative
42
>>> abs(n) # for any n
42
Don’t forget to check the docs.
回答 1
简单地乘以-1就可以双向工作…
>>> -10 * -1
10
>>> 10 * -1
-10
simply multiplying by -1 works in both ways …
>>> -10 * -1
10
>>> 10 * -1
-10
回答 2
如果“保留一个正数”表示您希望一个正数保持正数，而且还希望将一个负数转换为正数，请使用abs()：
>>> abs(-1)
1
>>> abs(1)
1
If “keep a positive one” means you want a positive number to stay positive, but also convert a negative number to positive, use abs():
>>> abs(-1)
1
>>> abs(1)
1
回答 3
内置函数abs（）可以解决问题。
positivenum = abs(negativenum)
The inbuilt function abs() would do the trick.
positivenum = abs(negativenum)
回答 4
In [6]: x = -2
In [7]: x
Out[7]: -2
In [8]: abs(x)
Out[8]: 2
实际上abs将返回absolute value任何数字。绝对值始终是非负数。
In [6]: x = -2
In [7]: x
Out[7]: -2
In [8]: abs(x)
Out[8]: 2
Actually abs will return the absolute value of any number. Absolute value is always a non-negative number.
回答 5
如果您使用numpy，则可以使用
import numpy as np
np.abs(-1.23)
>> 1.23
它将提供绝对值。
If you are working with numpy you can use
import numpy as np
np.abs(-1.23)
>> 1.23
It will provide absolute values.
