Random Number Generation¶
This module is based upon the random
module in the Python standard library.
It contains functions for generating random behaviour.
To access this module you need to:
import random
We assume you have done this for the examples below.
Functions¶
-
random.
getrandbits
(n)¶ Returns an integer with
n
random bits.
Warning
Because the underlying generator function returns at most 30 bits, n
may only be a value between 1-30 (inclusive).
-
random.
seed
(n)¶ Initialize the random number generator with a known integer
n
. This will give you reproducibly deterministic randomness from a given starting state (n
).
-
random.
randint
(a, b)¶ Return a random integer
N
such thata <= N <= b
. Alias forrandrange(a, b+1)
.
-
random.
randrange
(stop)¶ Return a randomly selected integer between zero and up to (but not including)
stop
.
-
random.
randrange
(start, stop) Return a randomly selected integer from
range(start, stop)
.
-
random.
randrange
(start, stop, step) Return a randomly selected element from
range(start, stop, step)
.
-
random.
choice
(seq)¶ Return a random element from the non-empty sequence
seq
. Ifseq
is empty, raisesIndexError
.
-
random.
random
()¶ Return the next random floating point number in the range [0.0, 1.0)
-
random.
uniform
(a, b)¶ Return a random floating point number
N
such thata <= N <= b
fora <= b
andb <= N <= a
forb < a
.