# python – How to get a random number between a float range?

## The Question :

470 people think this question is useful

randrange(start, stop) only takes integer arguments. So how would I get a random number between two float values?

• If you wanted numpy it’s np.random.uniform(start, stop) or np.random.uniform(start, stop, samples) if you wanted multiple samples. Otherwise below answers are best.

724 people think this answer is useful
>>> random.uniform(1.5, 1.9)
1.8733202628557872



81 people think this answer is useful

random.uniform(a, b) appears to be what your looking for. From the docs:

Return a random floating point number N such that a <= N <= b for a <= b and b <= N <= a for b < a.

See here.

68 people think this answer is useful

if you want generate a random float with N digits to the right of point, you can make this :

round(random.uniform(1,2), N)



the second argument is the number of decimals.

6 people think this answer is useful

Most commonly, you’d use:

import random
random.uniform(a, b) # range [a, b) or [a, b] depending on floating-point rounding



Python provides other distributions if you need.

If you have numpy imported already, you can used its equivalent:

import numpy as np
np.random.uniform(a, b) # range [a, b)



Again, if you need another distribution, numpy provides the same distributions as python, as well as many additional ones.