How to generate negative random value in python

Question

I am starting to learn python, I tried to generate random values by passing in a negative and positive number. Let say -1, 1.

How should I do this in python?

Answer 1

Use random.uniform(a, b)

>>> import random
>>> random.uniform(-1, 1)
0.4779007751444888
>>> random.uniform(-1, 1)
-0.10028581710574902

Answer 2

import random

def r(minimum, maximum):
    return minimum + (maximum - minimum) * random.random()

print r(-1, 1)

EDIT: @San4ez's random.uniform(-1, 1) is the correct way. No need to reinvent the wheel…

Anyway, random.uniform() is coded as:

def uniform(self, a, b):
    "Get a random number in the range [a, b) or [a, b] depending on rounding."
    return a + (b-a) * self.random()