OK, so what kind of issues are there with UTF-8? Especially since it's pretty much the standard everywhere, these days?
On Sat, Oct 1, 2022 at 1:01 AM David Crayford <[email protected]> wrote: > On 27/9/22 19:26, Seymour J Metz wrote: > > By "enhanced ASCII" do you mean ISO-8859-1? UTF-8? "E. None of the > above."? > > ISO8859-1 is more reliable. There are issues with UTF-8. There is a > great blog post by an IBM DE who is working on porting FOSS to z/OS > > https://makingdeveloperslivesbetter.wordpress.com/2022/01/07/is-z-os-ascii-or-ebcdic-yes/. > > > > > > > > > > -- > > Shmuel (Seymour J.) Metz > > http://mason.gmu.edu/~smetz3 > > > > ________________________________________ > > From: IBM Mainframe Discussion List [[email protected]] on > behalf of David Crayford [[email protected]] > > Sent: Monday, September 26, 2022 6:41 PM > > To: [email protected] > > Subject: Re: IBM python documentation? > > > > On 27/9/22 00:34, Farley, Peter x23353 wrote: > >> Thanks for the reminder about the zoautil_py functions, I did know > about them but there are gaps -- e.g. ZOAU has no direct support for simple > sequential processing of VSAM files (e.g., to download a copy of VSAM data > to a flat file in the Unix Services environment for analysis there). I > have used a Rexx script that executes the FileManager batch utility program > FMNMAIN to perform such functions. The FileManager batch program proved to > be the most compatible in generating correct Unix Services output files for > various flavors of VSAM input files where IDCAMS REPRO or DFSORT "OPTION > COPY" outputs were less so. > >> > >> Re: "ADDRESS TSO" needs - Rexx is not necessarily needed, as there is > also the Unix Services command "tso" (or "tsocmd" for authorized services) > to execute a single TSO command. The python subprocess.run() function > could handle executing that command and capturing the output as needed. > >> > >> For more complicated "ADDRESS TSO" needs, yes one can execute a Rexx > script in the Unix Services environment which uses "ADDRESS TSO" to execute > a Rexx script also stored in that environment (or in an MVS library > assigned to SYSEXEC) that then actually uses "ADDRESS TSO" functions. A > bit Rube Goldberg, but it does work, as my recent experimentation with > getting LISTDSI output from the Unix Services environment proved. > Conceivably one could write that first Rexx script to set up an ISPF > environment (all the needed DD's, etc.) and execute the second (functional) > script in an ISPF environment (I haven't tried that yet; here there be > dragons). > > Should have used my lua port :) It supports all access methods and has a > > listdsi function that I wrote - io.listdsi(dsname) > > > > > >> Re: Writing an MVS I/O package for IBM python - ISTM that without > documentation of the runtime architecture of the IBM python port (and also > possibly access to the source of the port) it is not likely to succeed. > OCO strikes again. > > It's certainly not OCO. IBM ship all the header files to write > > extensions including a zos.h. What you need to know is that it's 64-bit, > > enhanced ASCII and is compiled using the xlclang compiler. Extensions > > are shared objects so you need to following compiler options: -q64 > > -qascii -qexportall. You may not need "exportall" if IBM have defined > > PyMODINIT_FUNC for the platform. > > > > > >> The new DSFS functionality may or may not relieve the need for an > MVS-specific I/O package. That remains to be seen. > >> > >> Peter > >> > >> -----Original Message----- > >> From: IBM Mainframe Discussion List <[email protected]> On > Behalf Of Matt Hogstrom > >> Sent: Monday, September 26, 2022 8:28 AM > >> To: [email protected] > >> Subject: Re: IBM python documentation? > >> > >> If IIRC IBM loosely paired the IBM ZOAU to “assist Python”. > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcommunity.ibm.com%2Fcommunity%2Fuser%2Fibmz-and-linuxone%2Fblogs%2Faustin-wells1%2F2020%2F12%2F11%2Fusing-ibm-open-enterprise-python-for-zos-and-zoau&data=05%7C01%7Csmetz3%40gmu.edu%7Ccfa1d3f0cb6144907fa608daa0104277%7C9e857255df574c47a0c00546460380cb%7C0%7C0%7C637998288955467761%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=CSIi3EDh0%2Bl60cgC%2B2ZSh6zbr6omoi4FwR125vs76UE%3D&reserved=0 > >> > >> The challenge I see currently with Python is that is runs in a USS > environment so if you need to “ADDRESS TSO” you need to call a REXX from > Python in USS and do the other work. Its probably not going to happen but > a “System” Python might fill that gap. > >> > >> Matt Hogstrom > >> [email protected] > >> > >> “It may be cognitive, but, it ain’t intuitive." > >> — Hogstrom > >> > >>> On Sep 25, 2022, at 11:15 PM, David Crayford <[email protected]> > wrote: > >>> > >>> On 26/9/22 10:43, Charles Mills wrote: > >>>>> It's trivial to write an MVS I/O package if you have a C compiler. > >>>> One might ask then why IBM has not done so. > >>> I would suggest that they have not had a requirement. IBM use Python > in their analytics products and for new stuff like Ansible. Same with > golang, they need it for Kubernetes and OpenShift for z/CX containers. I > doubt very much if many customers have tried golang. It's a great language > now it supports generics. As fast as C++ with many advantages. > >>> > >>> > >>>> Charles > >>>> > >>>> -----Original Message----- > >>>> From: IBM Mainframe Discussion List [mailto:[email protected]] > >>>> On Behalf Of David Crayford > >>>> Sent: Sunday, September 25, 2022 6:57 PM > >>>> To: [email protected] > >>>> Subject: Re: IBM python documentation? > >>>> > >>>> On 26/9/22 07:34, Farley, Peter x23353 wrote: > >>>>> I know Rocket's port of python has some documented enhancements to > support MVS dataset access among other things, but I have failed to find > any documentation on the IBM websites for an IBM-produced "python > Programmers Guide" (or similar) that would describe and provide examples > for any "IBM-specific" functional enhancements to the base language > facilities. > >>>>> > >>>>> Is there any such documentation? Or are the python.org > >>>>> documentation websites the only reference material available for the > >>>>> IBM port of python? (i.e., no functional enhancements at all are > >>>>> provided in the IBM port) > >>>> Correct! It's trivial to write an MVS I/O package if you have a C > compiler. > >> -- > >> > >> This message and any attachments are intended only for the use of the > addressee and may contain information that is privileged and confidential. > If the reader of the message is not the intended recipient or an authorized > representative of the intended recipient, you are hereby notified that any > dissemination of this communication is strictly prohibited. If you have > received this communication in error, please notify us immediately by > e-mail and delete the message and any attachments from your system. > >> > >> > >> ---------------------------------------------------------------------- > >> For IBM-MAIN subscribe / signoff / archive access instructions, > >> send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to [email protected] with the message: INFO IBM-MAIN > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > -- Jay Maynard ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
