Overview

Cross-Skilling from IRIS objectScript to Python it becomes clear there are some fascinating differences in syntax.

One of these areas was how Python returns Tuples from a method with automatic unpacking.

Effectively this presents as a method that returns multiple values. What an awesome invention :)

out1, out2 = some_function(in1, in2)

ObjectScript has an alternative approach with ByRef and Output parameters.

Do ##class(some_class).SomeMethod(.inAndOut1, in2, .out2)

Where:

• inAndOut1 is ByRef
• out2 is Output

The leading dot (".") in front of the variable name passes ByRef and for Output.

The

My general question is how to convert to a %Library.ListOfObjects to a Python "array-like" structure for use in Matplotlib.

Specifically, I have a Line Object which is comprised of a list of Points (see classes below). I want to pass the line to Python to create a Matplotlib Path.

Bonus points for converting the Point to a Python tuple!

Class geo.model.Point Extends %SerialObject
{
  Property latitude As %Float(MAXVAL = 90.0, MINVAL = -90.0, SCALE = 6);
  Property longitude As %Float(MAXVAL = 180.0, MINVAL = -180.0, SCALE = 6);
}

Class geo.model.Line Extends %SerialObject
{
  Property

Named parameters can be achieved with SQLAlchemy :  

from sqlalchemy import create_engine, text,types,engine

_engine = create_engine('iris+emb:///')

with _engine.connect() as conn:
    rs = conn.execute(text("select :some_private_name"), {"some_private_name": 1})
    print(rs.all())

or with native api

from sqlalchemy import create_engine, text,types,engine

# set URL for SQLAlchemy
url = engine.url.URL.create('iris', username='SuperUser', password='SYS', host='localhost', port=33782, database='FHIRSERVER')

_engine = create_engine(url)

with _engine.connect() as conn:
    rs = conn.execute(text("select :some_private_name"), {"some_private_name": 1})
    print(rs.all())

If you are using Python, you can use the built-in venv module to create a virtual environment. This module is the recommended way to create and manage virtual environments.

A virtual environment is a tool that helps to keep dependencies required by different projects separate by creating isolated python virtual environments for them. It solves the “Project X depends on version 1.x but, Project Y needs 4.x” dilemma, and keeps your global site-packages directory clean and manageable.

So if like me you work a lot with Python, you can use the venv module to create a virtual environment for your project. This will allow you to install packages without affecting the global Python installation.

You will find here two neat alias to create and activate a virtual environment.

Python aliases

alias venv="python3 -m venv .venv; source .venv/bin/activate"
alias irisvenv="python3 -m venv .venv; source .venv/bin/activate; pip install https://github.com/grongierisc/iris-embedded-python-wrapper/releases/download/v0.0.3/iris-0.0.3-py3-none-any.whl"

I'm curious about how embedded Python is handled by %CSP classes, particularly in the case of defining REST endpoints on IRIS.
Here is a simple dispatch class for the endpoint /api/pythonapp on my local IRIS instance (2022.3):

Class Python.App.Dispatch Extends%CSP.REST
{

XData UrlMap [ XMLNamespace = "https://www.intersystems.com/urlmap" ]
{
<Routes>
    <Route Url="/test" Method="GET" Call="Hello" />
</Routes>
}

ClassMethod Hello() As%Status [ Language = python ]
{
    import iris

    print('Hello World!')
    return True
}

}

Making a GET request to

Hello,

I'm starting testing embedded python and external libraries.

When I try to use the win32api-library I get the following error :

<THROW> *%Exception.PythonException  230 ^^0^ <class 'ModuleNotFoundError'>: No module named 'win32api' -

This is my code :

ClassMethod CreateDocument(path As %String) [ Language = python ]
{
import win32api

...
}
 

The librarie is visible in C:\InterSystems\IRIS\mgr\python\win32.

Am I doing something wrong ?

Regards,

Kurt Hofman,

ASCI nv.

Hi Community,
In this article I will demonstrate below steps to add Interactive map and visualize geographic data to web application:

• Step1 : Install Application
• Step2 : Create CSP Page
• Step3 : Extend dc.IrisGeoMap.Folium class
• Step4 : Invoke DrawGeoDetails() Method

So Let us start.
 

Step1 : Install Application

First of all we need to install iris-geo-map application by using ZPM

zpm "install iris-geo-map"

So, I know that I can return a SQL Error message from my SQL Procedure written in ObjectScript, with code like this

$ cat <<EOF | irissqlcli iris://_SYSTEM:SYS@localhost:1972/USER
CREATEorREPLACEPROCEDUREtest()
LANGUAGE OBJECTSCRIPT
{
 SET %sqlcontext.%SQLCODE = 400SET %sqlcontext.%ROWCOUNT = -1SET %sqlcontext.%Message = "test error message"
};

CALLtest();

EOF
[SQLCODE: <-400>:<Fatal error occurred>]
[Location: <SPFunction>]
[%msg: <test error message>]

But I did not find how to do it with Python. I can't find %sqlcontext variable available there

Hi Community
In this article, I will demonstrate the functionality of my app iris-geo-map
 

IRIS Geo Map application is a tool to visualize geographic data by generating interactive maps by using Embedded Python functionality. Application is using Folium Python library

folium builds on the data wrangling strengths of the Python ecosystem and the mapping strengths of the leaflet.js library.Manipulate your data in Python, then visualize it in on a Leaflet map via folium.folium makes it easy to visualize data that’s been manipulated in Python on an interactive leaflet map.

I copied a 5 MB messages.log file to AWS where I have iris-log-viewer app deployed. I ran the test to see how it takes in IRIS code to import the lines into a persistent table:

IRISAPP>set m5mb="/home/irisowner/irisdev/messages.old_20221231.log"

IRISAPP>

IRISAPP>do ##class(otw.log.irislogreader).Test1(m5mb)
Test1 begins at 02/05/2023 12:49:30
ReadLogLines
/home/irisowner/irisdev/messages.old_20221231.log
Open
Test1 ends at 02/05/2023 12:49:34
Test1 execution time: 3.500789

select count(*) from otw_log.Log

63239

It took 3.5 seconds and I had 63239 lines in the table.

As my entry into InterSystems Developer Tools Contest happening now I have been working on an alternative to the Console Log Viewer web page provided as part of InterSystems IRIS Management Portal. Console log is a file called messages.log. It is what InterSystems support asks me to send to them when I open a support ticket. Working on IRIS containers deployed in the cloud it is not straight forward to copy the messages.log file to a place where I can attach it to an email. Iris-log-viewer app provides a Download link to download messages.log from any browser. 

I observed it takes a couple

I developed iris-log-viewer on a work laptop using an older version of IRIS. My messages.log file has nearly 10k lines. I noticed it takes a couple of seconds to read messages.log file line by line, import each line into a persistent class, and display messages on my screen. I wonder if Python can speed up the process.

I developed EmbeddedPython class. Initially I imported a python script file to read messages.log file in Python. Later I figured out how to write a Python classMethod where I invoke IRIS classMethod to import one line at a time while reading messages.log.

I developed

Python has become the most used programming language in the world (source: https://www.tiobe.com/tiobe-index/) and SQL continues to lead the way as a database language. Wouldn't it be great for Python and SQL to work together to deliver new functionality that SQL alone cannot? After all, Python has more than 380,000 published libraries (source: https://pypi.org/) with very interesting capabilities to extend your SQL queries within Python. This article details how to create new SQL Stored Procedures in InterSystems IRIS Database using Embedded Python.

Python libraries used as samples

This

Applications that work with bill payments and receipts, as well as the delivery and inventory of items, generally require the use of barcodes or QR Codes. The latter is used in even broader scenarios since the QR Code can store more information than a simple bar code. Thus, it is important to have the ability to generate barcodes and QR Codes or read the data stored in them from an image or a PDF. This article will show you how to do this using Python and some of its free libraries.

Pyzbar library

The pyzbar library reads one-dimensional barcodes and QR codes from Python 2 and 3 using the zbar

What would be the syntax for something like this

ws['A1']= "blah"

I did try

set ws("A1") = "blah"

however that didn't work

We're having a problem with the way Python modules are being cached in Iris. If we modify some code and then reimport a module it is still processing the old code.

E.g. Create a python file:

helloWorld.py

def helloWorld() :
  return "Hello world"

The run the following in the Iris terminal:

 Hello, good afternoon! (or good morning or good evening)
 

I was doing some very basic tests, based on the documentation, using Python in Studio.
I decided to call a python method through the Studio's own terminal as a demonstration, but the result was different from the terminal result:
Code:

Class User.EmbeddedPython
{

// Write ##class(User.EmbeddedPython).Test()/// DescriptionClassMethod Test() As%Status [ Language = python ]
{
    # print the members of the Fibonacci series that are less than 10print("Fibonacci series")
    a, b = 0, 1while a < 10:
        print(a,

ipython-iris-magic

%%iris magic for IPython, can run ObjectScript command in Notebooks

It can be run in any Notebook and does not require any special setup on IRIS or the Notebook.

Demo

Native Api

What is Web Scraping:

In simple terms, Web scraping, web harvesting, or web data extraction is an automated process of collecting large data(unstructured) from websites. The user can extract all the data on particular sites or the specific data as per the requirement. The data collected can be stored in a structured format for further analysis.

Steps involved in web scraping:

1. Find the URL of the webpage that you want to scrape
2. Select the particular elements by inspecting
3. Write the code to get the content of the selected elements
4. Store the data in the required format

It’s that simple !!

The

Hi Community, 

Let's meet virtually at our Third Community Roundtable! This will be a 60-min discussion on a given topic: Developing with Python. 

Register through >> this Global Masters challenge << 

UPDATE: the roundtable recording is available here.

TL;DR: This article describes an introductory-level project that exercises some string-manipulation functions in both ObjectScript and Python…with specs from a song.

After you’ve written your first “Hello World!” program, are you ready for a new fun challenge?  An old, very popular (at the time) song may be just what you need.

While I was driving around on vacation in southern Maine, the local “Legends” radio station played the old classic, “The Name Game” by Shirley Ellis (https://www.youtube.com/watch?v=5MJLi5_dyn0).

Hi Community,

In this article I will explain how to display management portal dashboard by using Python Flask web and Boostrap framework with the help of embedded python
 

Hi Developers,

Enjoy watching the new video on InterSystems Developers YouTube:

⏯ Using Python with InterSystems IRIS @ Global Summit 2022

Hey Developers,

Watch this video to learn how InterSystems IRIS users are deploying Embedded Python to speed their application development:

⏯ Embedded Python Use Cases @ Global Summit 2022

Hi, devs!

In ObjectScript I can refer to a class parameter as:

write ..#ParameterName

How do I do the same in Embedded Python?

Introduction

This article aims to give an introduction to what gRPC is and an example of how to play with the official Hello World using IRIS Embedded Python.

You can find all the code exposed here, in this project repo.

gRPC

The gRPC (gRPC remote procedure call) is an API architectural style based on the RPC protocol. The project was created by Google in 2015 and is licensed under Apache 2.0. Currently, the project is supported by the Cloud Native Computing Foundation (CNCF).

Successful cases of its use are related to connecting services between backends, such as services in microservices style

Overview

We started to use Azure Service Bus (ASB) as an enterprise messaging solution 3 years ago. It is being used to publish and consume data between many applications in the organization. Since the data flow is complex, and one application’s data is usually needed in multi applications the “publisher” ---> ”multiple subscribers” model was a great fit. The ASB usage in the organization is dozens of millions of messages per day, while IRIS platform is having around 2-3 million messages/day.

The Problem with ASB

When we started with the ASB integration, we found that the AMQP protocol is not an

Hi developers!

Those who code IRIS solutions in VSCode using Docker often use the convenient ObjectScript menu, which contains links to Management Portal, Class Reference, Unittest portal, Productions, etc.

While drilling down to a Dev Container to code Embedded Python there is no such option, at least within my settings:

So I don't know how to connect to it. 

Thoughts?

Hi developers!

Let me share with you a minimal embedded python template, that I can recommend as a starting point for any general project with InterSystems IRIS that will use embedded python.

Features:

• Embedded Python ready;
• Examples of 3 ways of Embedded python development;
• VSCode development ready;
• Docker enabled;
• Online demo enabled;
• ZPM First development ready.

Let's discuss the features below!

Hi, devs!

What's the way to call the methods of %SYSTEM class from python?

I tried this way:

print(iris.cls('_SYSTEM.OBJ').Version())

and getting an error:

Traceback (most recent call last):
  File "<input>", line 1, in <module>
RuntimeError: iris.class: error finding class

Here is how it works in ObjectScript:

USER>w##class(%SYSTEM.OBJ).Version()
InterSystems IRIS Version 2022.1.0.209
USER>

Thoughts?