How To Create A Random List With Only Unique Values?

I want to create a random list with 100 elements. So far, so good... Example 1: works fine, because the function has a range which is big enough not to repeat any value list = rand

Solution 1:

In this case, do not use random.sample, but build the list from elements chosen within a range:

import random

[random.randrange(50, 80) for _ in range(100)]

example output:

[57,
 52,
 59,
 67,
 52,    # some elements repeat
 64,
 75,
...

Solution 2:

Use numpy random:

import numpy as np
np.random.randint(low=3,high=12,size=100)

Solution 3:

Have a look at numpy.choice

import numpy as np
l = range(50,80)
np.random.choice(l, 100, True)

Solution 4:

Use list comprehension + randint,

[random.randint(1,200) for _ in range(100)]

See the element are repeating the count is not 100,

In [6]: len(set([random.randint(1,200) for _ in range(100)]))
Out[6]: 76