How to install Python in IRIS

Question 1

Question

Padmaja Konduru · Oct 16, 2023

Could you please help anyone how to import Python package in %SYSTEM package and to use python methods to write in object script class?

I used the following link to install the Python but I can't see the Python package in %SYSTEM package and my program throwing the Class Does not exist error?

https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls...

Please help on this..

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Question 2

Question

Pietro Di Leo · Oct 13, 2023

#Embedded Python #Python #InterSystems IRIS for Health

Hi everyone,

I'm attempting to compile a basic Python code on a remote server, but it appears that the compiler doesn't recognize the language.

The remote server is running a virtual machine with Oracle Linux Server 7.9 (64-bit), and it has IRIS for UNIX (Red Hat Enterprise Linux for x86-64) 2021.1 (Build 215U) [HealthConnect:3.3.0] installed.

When I try to compile a script that includes a Python ClassMethod, such as this "testpy.cls":

ClassMethod python() As %Status [ Language = python ]
{
    # prova python
    print("hello world")
}

This error returns (Error #5486: Invalid method language / Error #5030 An error occurred while compiling class '<className>'):

Compilation started on 10/13/2023 17:01:41 with qualifiers 'cuk'
Compiling class <className>
ERROR #5486: Invalid method language: <className>:MethodName:python
  > ERROR #5030: An error occurred while compiling class '<className>'
Detected 1 errors during compilation in 0.090s.

I've attempted to follow the instructions provided on this page: Python Prerequisites, but I couldn't resolve this problem. The problem persisted, even after executing "sudo su -" command to obtain root privileges before trying to install python3 or a python package, like numpy, through the command "yum install python3".

I also attempted to write some ObjectScript code, recalling ##class(%SYS.Python).Builtins() or ##calls(%SYS.Python).Shell(), such as:

ClassMethod HelloWorld() As %Status
{
    set pythonBuiltins = ##class(%SYS.Python).Builtins()
    do pythonBuiltins.print("hello world")
}

However, I encountered an error indicating that these methods do not exist.

The same Python codes work fine on my local instance of IRIS and I can't figure out why they doesn't work on the remote server instance.

I've identified the path of the Python packages folder on my computer (C:\InterSystems\IRISHealth\mgr\python) and noticed the only big difference between the local and remote instances. While the local folder includes several subfolders (such as numpy, pandas, etc.), the corresponding folder on the remote server (u01/<instanceName>/mgr/python) is empty, despite multiple attempts to install python3 and packages like numpy or pandas, even if executed directly from the mgr/python folder.

It is like Python and its packages are installed but invisible. In fact, if I try to run the command yum install python3 again, it returns this message, even if the folder is still empty:

Loaded plugins: langpacks, ulninfo
Package python3-3.6.8-19.0.1.el7_9.x86_64 already installed and latest version
Nothing to do

I've tried to clean some space on the remote server and re-tried the installation with 2.5 Gb of free space available, but nothing changed.

Does anybody know how to handle this?

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Question 3

Question

Augustin MADET · Oct 10, 2023

#InterSystems IRIS

Avec l'approche Python, je rencontre l'erreur suivante :

ERREUR <Ens>ErrCanNotAcquireJobRootLock: Impossible d'obtenir un verrouillage pour l'enregistrement de la globale

Ci-dessous le code implémenté :

import pandas as pd
from sqlalchemy import create_engine, types


class FileOperationEmbedded(BusinessOperation):
    tablename = None
    engine = None

    def on_init(self):
        if not hasattr(self, "dsnIris"):
            self.dnsIris = 'iris+emb:///'
        if not hasattr(self, "schema"):
            self.schema = 'Toto'

        self.engine = create_engine(self.dnsIris)
        return None

    def on_message(self, request:DFrameRequest):
        df = pd.DataFrame(request.dframe.col)

        for row in request.dframe.col:
            df = pd.DataFrame.from_dict(row, orient='index').T.reset_index(drop=True)
            try:
                df.to_sql(name=self.tablename, con=self.engine, if_exists='append', index=False, schema=self.schema,
                          dtype={'id': types.INTEGER, 'col_type': types.VARCHAR(50), 'col_center': types.VARCHAR(50),
                                 'col_name': types.VARCHAR(50), 'col_issue_name': types.VARCHAR(50),
                                 'col_model': types.VARCHAR(50), 'col_treatment': types.VARCHAR(50),
                                 'source': types.VARCHAR(50), 'filename': types.VARCHAR(100), 'created_at': types.TIMESTAMP})
            except Exception as e:
                self.log_info(f"Une erreur s'est produite : {e}")

        return None

Avez-vous une idée d'où pourrait provenir l'erreur et quel la marche suivre pour résoudre le problème ?

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