How to convert a negative number to positive?
Question:
How can I convert a negative number to positive in Python? (And keep a positive one.)
Answers:
>>> n = -42
>>> -n # if you know n is negative
42
>>> abs(n) # for any n
42
Don’t forget to check the docs.
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
The inbuilt function abs() would do the trick.
positivenum = abs(negativenum)
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.
simply multiplying by -1 works in both ways …
>>> -10 * -1
10
>>> 10 * -1
-10
If you are working with numpy you can use
import numpy as np
np.abs(-1.23)
>> 1.23
It will provide absolute values.
The inbuilt function abs() would do the trick.
n = -42
abs(n) # for any n
42
How can I convert a negative number to positive in Python? (And keep a positive one.)
>>> n = -42
>>> -n # if you know n is negative
42
>>> abs(n) # for any n
42
Don’t forget to check the docs.
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
The inbuilt function abs() would do the trick.
positivenum = abs(negativenum)
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.
simply multiplying by -1 works in both ways …
>>> -10 * -1
10
>>> 10 * -1
-10
If you are working with numpy you can use
import numpy as np
np.abs(-1.23)
>> 1.23
It will provide absolute values.
The inbuilt function abs() would do the trick.
n = -42
abs(n) # for any n
42