anyone here using <https://github.com/Kotlin/kotli...

# datascience

[elect]

anyone here using kotlin-numpy?
I'm trying to port some python to kotlin, specifically

nr_expected_exponents = binom(m + n, n) // nr_expected_exponents: np.ndarray

but if I try

binomial(m + n, doubleArrayOf(n.toDouble())

then I get

Cannot run program "python" (in directory "/tmp/nativeKtNumPy2138897567746194273"): error=2, No such file or directory

java.io.IOException: Cannot run program "python" (in directory "/tmp/nativeKtNumPy2138897567746194273"): error=2, No such file or directory

[Iaroslav Postovalov]

Programs using kotlin-numpy can work only in environments where Python is available

[elect]

I have python3

[Iaroslav Postovalov]

Install it globally or run your app in venv

[Iaroslav Postovalov]

I have python3

Do you have an alias python -> python3?

[elect]

no, python is unknown

[Iaroslav Postovalov]

You can add link to python3:

ln -s /usr/bin/python3 /usr/bin/python

[elect]

elect@5800x:~/Documents/minterpy/tests$ ln -s /usr/bin/python /usr/bin/python3

ln: failed to create symbolic link '/usr/bin/python3': File exists

[Iaroslav Postovalov]

Mistyped, sorry

[elect]

I just saw also this on ubuntu

sudo apt install python-is-python3

[Iaroslav Postovalov]

I haven't used this package, but it seems it does the same thing.

[elect]

now I get

[elect]

Untitled

[Iaroslav Postovalov]

It seems it can't install ktnumpy because of lack of admin rights

[elect]

is there a TODO list to follow to get ktnumpy up and running?

[elect]

or is it enough to have the requirements?

[Iaroslav Postovalov]

Try
sudo python3 -m pip install -i <https://pypi.org/simple/> ktnumpy==0.1.5

[elect]

Untitled

[Iaroslav Postovalov]

It is bug in ktnumpy's setup.py I think

[elect]

I'll open an issue then

[elect]

thanks so far

[Iaroslav Postovalov]

By the way, Apache Commons Math offers https://commons.apache.org/proper/commons-math/javadocs/api-3.6.1/org/apache/commons/math3/distribution/BinomialDistribution.html

[elect]

I'll try, thanks

[elect]

I just wonder if I shall get this way.. I'm trying to port a project from python to kotlin, and this is actually using numpy

[elect]

can Apache math replaces more or less the whole numpy?

[Ilya Muradyan]

@Pavel Gorgulov please help

[elect]

thanks

[altavir]

Commons math has quite different ideology (closer to the current KMath than to numpy). It has a wide variety of options, but it does not rely on NDStructures like numpy does

[elect]

ok, then I should have math background as well, which is not what I'm interested in

[elect]

anyway, issue opened