Re: [IBMiOSS] ibm_db and itoolkit for Python -- OPENSOURCE

Hi Mark,

Do you have reasons for that opinion? I ask because I am undecided. I
like midrange.com forums because they are simple and always work, and I
frequently use the GMail "Mute thread" functionality to stop getting emails
for threads I don't intend to follow.

I am not a fan of chat (Gitter,Slack,Ryver) with large groups because it
can get chatty fast and there's a good chance the best nuggets will get
lost; but I REALLY like code markup in those tools to make things easier to
read.

Aaron Bartell
litmis.com - Services for open source on IBM i

On Fri, Jun 24, 2016 at 8:05 AM, Mark Murphy/STAR BASE Consulting Inc. <
mmurphy@xxxxxxxxxxxxxxx> wrote:

I would prefer things like this be worked out here.

Mark Murphy
STAR BASE Consulting, Inc.
mmurphy@xxxxxxxxxxxxxxx

-----Bill Gravelle <starbg@xxxxxxxxxxx> wrote: -----
To: "opensource@xxxxxxxxxxxx" <opensource@xxxxxxxxxxxx>
From: Bill Gravelle <starbg@xxxxxxxxxxx>
Date: 06/23/2016 02:20PM
Subject: Re: [IBMiOSS] ibm_db and itoolkit for Python

Sorry to interrupt - I know this is very complicated stuff y’all are
working out here …

Since you’re both on the new community collaboration/communication
platform over on Ryver (and everyone else here in this list has been
invited), might this kind of interactive(ish) Q&A be more efficient and
effective within that interface?

On Jun 23, 2016, at 12:12 PM, Kevin Adler <kadler@xxxxxxxxxx> wrote:

Do you have an older version of six installed?

If you've gotten to a recent PTF level of the Python 3 runtime it will be
included by default.

What is the output of the following commands?

pip3 list | grep six

python3 -c 'import six; print(six.__version__); print(six.__file__);'

"OpenSource" <opensource-bounces@xxxxxxxxxxxx> wrote on 06/23/2016
12:56:35 PM:

From: Jim Steil <jim@xxxxxxxxxxxxxxx>
To: IBMi Open Source Roundtable <opensource@xxxxxxxxxxxx>
Date: 06/23/2016 12:56 PM
Subject: Re: [IBMiOSS] ibm_db and itoolkit for Python
Sent by: "OpenSource" <opensource-bounces@xxxxxxxxxxxx>

I received the following trying ti pip3 install it:

[qsecofr@QLFI2]/QOpenSys/QIBM/ProdData/OPS/Python-pkgs/ibm_db# pip3

install

ibm_db-2.0.5.4-cp34-cp34m-os400_powerpc.whl

Traceback (most recent call last):
File "/QOpenSys/usr/bin/pip3", line 7, in <module>
from pip import main
File
"/QOpenSys/QIBM/ProdData/OPS/Python3.4/lib/python3.4/site-packages/
pip/__init__.py",
line 13, in <module>
from pip.commands import commands, get_summaries,

get_similar_commands

File
"/QOpenSys/QIBM/ProdData/OPS/Python3.4/lib/python3.4/site-packages/
pip/commands/__init__.py",
line 6, in <module>
from pip.commands.bundle import BundleCommand
File
"/QOpenSys/QIBM/ProdData/OPS/Python3.4/lib/python3.4/site-packages/
pip/commands/bundle.py",
line 6, in <module>
from pip.commands.install import InstallCommand
File
"/QOpenSys/QIBM/ProdData/OPS/Python3.4/lib/python3.4/site-packages/
pip/commands/install.py",
line 5, in <module>
from pip.req import InstallRequirement, RequirementSet,
parse_requirements
File
"/QOpenSys/QIBM/ProdData/OPS/Python3.4/lib/python3.4/site-packages/
pip/req/__init__.py",
line 3, in <module>
from .req_install import InstallRequirement
File
"/QOpenSys/QIBM/ProdData/OPS/Python3.4/lib/python3.4/site-packages/
pip/req/req_install.py",
line 35, in <module>
from pip.utils import (
File
"/QOpenSys/QIBM/ProdData/OPS/Python3.4/lib/python3.4/site-packages/
pip/utils/__init__.py",
line 100, in <module>
def rmtree(dir, ignore_errors=False):
File
"/QOpenSys/QIBM/ProdData/OPS/Python3.4/lib/python3.4/site-packages/
pip/_vendor/retrying.py",
line 47, in wrap
@six.wraps(f)
AttributeError: 'module' object has no attribute 'wraps'
[qsecofr@QLFI2]/QOpenSys/QIBM/ProdData/OPS/Python-pkgs/ibm_db#

-Jim

On Thu, Jun 23, 2016 at 12:31 PM, Kevin Adler <kadler@xxxxxxxxxx>

wrote:

Oops, sorry gave you the wrong PTF number. Here's the Py3 PTF: SI60563

All the Python PTFs are documented here:

https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/

wiki/IBM%20i%20Technology%20Updates/page/Python%20PTFs

"OpenSource" <opensource-bounces@xxxxxxxxxxxx> wrote on 06/23/2016
09:26:58 AM:

From: Jim Steil <jim@xxxxxxxxxxxxxxx>
To: IBMi Open Source Roundtable <opensource@xxxxxxxxxxxx>
Date: 06/23/2016 09:27 AM
Subject: Re: [IBMiOSS] ibm_db and itoolkit for Python
Sent by: "OpenSource" <opensource-bounces@xxxxxxxxxxxx>

I did not have SI60567 install. I've installed it now. It added a

.whl

file to /QOpenSys/QIBM/ProdData/OPS/Python-pkgs/ibm_db, but only one

for

Python 2.7:

ibm_db-2.0.5.4-cp27-cp27m-os400_powerpc.whl

There is also an egg file, but that is for ibm_db v2.0.5.1 which I

think

is

what I already had installed. Is there a .whl file for ibm_db v

2.0.5.4

for Python 3?

-Jim

On Wed, Jun 22, 2016 at 10:29 PM, Kevin Adler <kadler@xxxxxxxxxx>

wrote:

connect/pconnect take implementation specific parameters, so they

aren't

in the PEP. We should probably document them somewhere. Here's the
function definitions from the ibm_db_dbi.py:

def connect(dsn=None, user='', password='', host='', database='',
conn_options=None):
def pconnect(dsn, user='', password='', host='', database='',
conn_options=None):

(Note, host is not supported on IBM i, since you have to specify

this

in

the RDB)

try this:

import ibm_db_dbi as dbi

conn = dbi.pconnect(dsn=None, database='*LOCAL', user=None,

password=None)

You can specify a DSN string like so:

dbi.pconnect("DATABASE=*LOCAL;UID=user;PWD=pass")

and this should be equivalent as above *LOCAL/None/None:

dbi.pconnect("DATABASE=*LOCAL")

Now that I'm looking at it again, it looks like I missed the

default

parameter for dsn on pconnect. Once that's there, you can do:

dbi.pconnect(database='*LOCAL', user=None, password=None)

(Already works on connect)

Make sure you're on the latest version of ibm_db. I'm not sure if

the

original shipped version of ibm_db_dbi actually worked. Since

2.0.5.1

it

should work, but I'd get to 2.0.5.4, which is shipped with

SI60567.

"OpenSource" <opensource-bounces@xxxxxxxxxxxx> wrote on 06/22/2016
09:33:07 PM:

From: Jim Steil <jim@xxxxxxxxxxxxxxx>
To: IBMi Open Source Roundtable <opensource@xxxxxxxxxxxx>
Date: 06/22/2016 09:34 PM
Subject: Re: [IBMiOSS] ibm_db and itoolkit for Python
Sent by: "OpenSource" <opensource-bounces@xxxxxxxxxxxx>

I'm trying ibm_db_dbi but can't figure out the pconnect

parameters.

Trying

to connect to the local database. Any pointers?

Jim
On Jun 22, 2016 8:25 PM, "John Yeung"

<gallium.arsenide@xxxxxxxxx>

wrote:

On Wed, Jun 22, 2016 at 5:54 PM, Jim Steil

<jim@xxxxxxxxxxxxxxx>

wrote:

Hey John - where can I get some info on ibm_db? I tried out

the

itoolkit

on my IBM i today and was a bit disappointed in what I had

to do

to

access

the database. I'm guessing this is not going to be the

preferred

method

of

db access for Python. I'd appreciate pointers to any info

you

have

on

ibm_db for Python...

I agree with Kevin: Under normal circumstances, you should not

be

using ibm_db directly, but rather ibm_db_dbi, to get the

standard

Python database interface as laid out in PEP 249. If you're a
long-time Python user, you're probably already familiar with

this

interface. If not, I find the PEP is pretty good documentation

for

it.

To be completely honest, I have never had especially high

hopes

for

itoolkit, whether for accessing data or programs:

http://yips.idevcloud.com/wiki/index.php/XMLSERVICE/Python

The documentation for the underlying XMLSERVICE has been

around

for

quite some time now, as well as some of its wrappers in other
languages. It just seems fundamentally verbose and cumbersome,

by

Python standards. The Python version (judging by the

documentation

linked to above) is about as verbose as I was expecting. It

looks

almost as bulky as Java, but with a style reminiscent of Ruby.

Or

maybe JavaScript. (I only have a passing familiarity with

those

languages.) But I haven't given it a fair shake yet, so we'll

see.

If I do become a convert to IBM's Python (as opposed to the
third-party iSeriesPython which I'm using now), I may wind up

writing

my own wrapper for itoolkit, or my own fork of itoolkit.

To me, itoolkit seems to be mainly for calling native programs

and

service programs (mostly written by your own shop, mostly in

RPG),

or

IBM system APIs. Both of these uses are probably dwindling

niches,

as

more and more people write stored procedures and UDFs, and IBM

exposes

more and more system services to SQL. Eventually, you may be

able

to

just do everything with ibm_db_dbi. But I know our shop is far

from

that point.

John Y.
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