• kdb+

  Pyq => Embedpy transition

  Posted by fav_pa on October 16, 2024 at 1:25 pm

  Hello!

  I used to use Pyq to call a python function within my q code.I definied a python function in a .p file, at the end of the file, used .q.name_of_fun= name_of_fun, nd then was able to call it from my q code directly in my q code.

  I am struggling to do the equivalent using embedpy (note that this is a long function and i would prefer not to define it within my q file). The matplotlib example in the embedpy doc does not cover this issue, as it simply launches the .p file but not using any q date in it.

  also, at some point, i used to do :

  p)import sys

  p)sys.path.append(str(q.lib_path))

  where lib_path was a string “Path/to/a/lib”

  i dont find the equivalent in embedpy

  Thank you for your help!

  fav_pa replied 2 months ago 2 Members · 1 Reply
• 1 Reply

• 

  rocuinneagain

  Member

  October 16, 2024 at 1:51 pm

  embedPy operates in a q first manner so you’d have to load your .p file and then call a q statement outside to do the assignment:

  https://github.com/KxSystems/embedPy/tree/master/docs

  q)func:.p.get[`func]

  PyKX is the most flexible interface as it allows you do mix q first and Python first code in the same project

  https://code.kx.com/pykx/2.5/

  Python first assign a python function to a q variable

  >>> kx.q['func'] = func

  q first assign a python function to a q variable:

  https://code.kx.com/pykx/2.5/pykx-under-q/intro.html#function-calls

  q)func:.pykx.get[`func]

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