How to execut code in local .py file in python gateway?

Question

Question

Hao Ma · Nov 29, 2019

who has tried "python gateway" in OpenExchange, could you please tell me how to execute code in a local .py file? a cusotmer engineer ask me the question while I don't have time to study it yet. Thank you very much.

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Sergey Lukyanchikov · Dec 13, 2019

In addition to Eduard's answer, a short example based on sending Python's exec command to Python (assuming Python 3.*) to execute a Python script stored in a file:

(1) Create a testfile.py in some folder that Python has access to, add the following lines to testfile.py:

f=open('disk:/path/to/your/folder/output.txt','w')
print('Hello Python Gateway',file=f)
f.close()

Save and close testfile.py

(2) Open IRIS Terminal, type and execute one by one the following commands:

set sc=##class(isc.py.Callout).Setup()

set sc=##class(isc.py.Main).SimpleString("exec(open('disk:/path/to/your/folder/testfile.py').read())",,,.sc)

(3) Check the output.txt file that has been created in your folder

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Eduard Lebedyuk · Nov 29, 2019

Note that instead of:

do ##class(isc.py.util.Shell).Shell()

Python Shell can be entered by simply typing

zpy

In there you can just directly type python code:

exec(open('disk:/path/to/your/folder/testfile.py').read())

Or don't open the shell and call:

set sc=##class(isc.py.Main).SimpleString("exec(open('disk:/path/to/your/folder/testfile.py').read())",,,.sc)

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score 2 · Answer 1 · 2019-11-29T03:44:08-05:00

This should work for Python Gateway:

set filename = "/path/to/code.py"
set file = ##class(%Stream.FileCharacter).%New()
set sc = file.LinkToFile(filename)
set sc = ##class(isc.py.Main).ExecuteCode(file)