Comments (2)
I was thinking that having an optional seed
argument would be useful too. But after realizing that randomint
and choice
from random
library do not also have seed arguments, I now think it is better to set the seed separately for consistency.
import exrex
import random
pattern = r'(A|N)[0-5]{3}'
random.seed(777)
string1 = exrex.getone(pattern)
random.seed(777)
string2 = exrex.getone(pattern)
string1 == string2 # returns True
Perhaps, getone
can be implemented as a method of a class derived from the base class Random
.
from exrex.
The functions used from the random module, in the function called by exrex.getone, could be taken from an instance of random.Random. Once this change is done, setting the seed as proposed by @ghosalya is easy.
_rng = random.Random()
def _randone(d, limit=20, grouprefs=None, seed=None):
_rng.seed(seed)
...
_rng.choice(...)
...
def getone(regex_string, limit=20, seed=None):
return _randone(parse(regex_string), limit, seed)
string1 = exrex.getone(pattern, seed=777)
It would also be easy to support the solution proposed by @vwyu in a more integrated manner.
def seed(seed):
_rng.seed(seed)
pattern = r'(A|N)[0-5]{3}'
exrex.seed(777)
string1 = exrex.getone(pattern)
exrex.seed(777)
string2 = exrex.getone(pattern)
string1 == string2 # returns True
from exrex.
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from exrex.