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  embedPy inside q (kdb+) process fails to import a module

  Posted by kovacsi on February 13, 2022 at 12:00 am

  Hi community

  I must learn how to use python modules inside q kdb+ process.

  at the process of learning :

  1.  using windows 10 x64 q , kdb+ , anaconda virtual environment

  on python 3.8.10, and KX Developer IDE.

  2. learned how to use embedPy and successfully loaded some

  python modules like ‘os’ in to q using reflections.

   

  now

  I try to use qoinbase-q to learn integrating embedPy with web-sockets
  on q kdb+ database.

  this code use an other project to extend q language using python modules
  extend .it fail on a point attempting to get functions of coin-pro python
  library.

  q)pc:.cbpro.PublicClient[]
  'cxt
  [4] C:Userssrv.condaenvsqenvqextend.q:181: .py.reflection.priv.context@:{.py.reflection.priv[y;`cxt][x;z]}

  can you help me fined how to debug it and resolve the problem?

  thanks
  Ori

   

  the function is:

  .py.reflection.priv.context:{[obj; atr; arg] 
  init: atr[`functions][`$"__init__"]; 
  params: init[`parameters]; 
  required: params[::;`required]; 
  if[(arg~(::)) and (any required);
   '"Missing required parameters: ",", " sv string where required];
   blk: .ut.blankNS; 
  arg: .py.reflection.priv.args[arg];
  ins: $[1<count arg;.;@][obj;arg];
   atr[`vars]: .py.vars[ins];
   atr: @[atr;`functions;{x _ `$"__init__"}];
   cxt: blk,(,/)value .ut.eachKV[`doc _ atr;{.py.reflection.priv[y;`cxt][x;z]}[ins]];
   cxt
  };

  kovacsi replied 9 months, 1 week ago 3 Members · 4 Replies
• 4 Replies

• 

  davidcrossey

  Member

  February 13, 2022 at 12:00 am

  Hi Ori,

  Interesting to see if anyone else in the Community has tried using this library who may be able to assist

  Just in case anyone else is interesting in looking at this issue, can I check you are referring to these projects?

  • michaelsimonelli/qoinbase-q: Q client for the Coinbase Pro API (github.com)
  • michaelsimonelli/qoinbase-py: Python client for the Coinbase Pro API – integrates with qoinbase-q (github.com)

  Thanks for sharing with the Community.

  Kind regards,

  David

• 

  kovacsi

  Member

  February 14, 2022 at 12:00 am

  Thanks David

  Do you know how to debug such cases? I try to display contents

  of the python library and understand what is the problem there,

  I can’t get it working the output is not clear and I can’t understand

  whet is the problem?

  Ori

• 

  rocuinneagain

  Member

  February 15, 2022 at 12:00 am

  The error is that a variable “cxt” is not being found.

  https://code.kx.com/q/basics/errors/#runtime-errors

   

  General debugging tips included on: https://code.kx.com/q/basics/debug/

   

  As this is a third party project you will get better support by raising an issue with the developer directly:

  • https://github.com/michaelsimonelli/extendPy/issues
  • https://github.com/michaelsimonelli/qoinbase-q/issues

  The developer does not document the supported embedPy versions which would be important to know.

   

  One difference I see is you are calling

  pc:.cbpro.PublicClient[]

  But the developer passes a string – this could be your issue

  https://github.com/michaelsimonelli/qoinbase-q/blob/359653d9e45b6319d897f5ae50af048225605ae2/cbpro.q#L27

  cli: .cli.priv.addFuncs .cbpro.PublicClient[url];

   

   

• 

  kovacsi

  Member

  February 15, 2022 at 12:00 am

  Thanks Rian

  I am already in contact with Michael on this issue.

  He is busy with other things so I try to resolve problem myself.

  Will try to insert the url, will you be able to help me debug this problem?

  I’m  stack with it since last week….

  Ori

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