added random(sample, shuffle, randrange) methods in helper_random

python3android
Mahendra 5 years ago
parent ef1cd5a9bd
commit 48b8af975a
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@ -1,9 +1,41 @@
import os
import random
from pyelliptic.openssl import OpenSSL
def randomBytes(n):
"""Method randomBytes."""
try:
return os.urandom(n)
except NotImplementedError:
return OpenSSL.rand(n)
def randomshuffle(population):
"""Method randomShuffle.
shuffle the sequence x in place.
shuffles the elements in list in place,
so they are in a random order.
"""
return random.shuffle(population)
def randomsample(population, k):
"""Method randomSample.
return a k length list of unique elements
chosen from the population sequence.
Used for random sampling
without replacement
"""
return random.sample(population, k)
def randomrandrange(x, y):
"""Method randomRandrange.
return a randomly selected element from
range(start, stop). This is equivalent to
choice(range(start, stop)),
but doesnt actually build a range object.
"""
return random.randrange(x, y)

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