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Re: python-on-guile

From: david larsson
Subject: Re: python-on-guile
Date: Wed, 12 Feb 2020 20:47:01 +0100 
On 2020-02-12 18:18, Stefan Israelsson Tampe wrote:

you should update the guile-persist repo and also stis-parser, there
was some cond-expand issues in those as well
Ok. I tried that. stis-parser now built fine on commit 8d49401e238ae703a466b5b98d3068e4fa974f2c
but guile-persist failed on make for commit: 659abf1dc64c1aa9d9e4c27fe349100dc908ee6c 

---------------------
make  all-recursive
make[1]: Entering directory '/home/user1/VirtualHome/src/guile-persist'
Making all in src/
make[2]: Entering directory '/home/user1/VirtualHome/src/guile-persist/src' 
make  all-am
make[3]: Entering directory '/home/user1/VirtualHome/src/guile-persist/src' 
make[3]: Nothing to be done for 'all-am'.
make[3]: Leaving directory '/home/user1/VirtualHome/src/guile-persist/src' make[2]: Leaving directory '/home/user1/VirtualHome/src/guile-persist/src' 
make[2]: Entering directory '/home/user1/VirtualHome/src/guile-persist'
  GEN      persist/slask.go
guile: warning: failed to install locale
warning: failed to install locale: Invalid argument
wrote `persist/slask.go'
  GEN      persist/primitive.go
guile: warning: failed to install locale
warning: failed to install locale: Invalid argument
wrote `persist/primitive.go'
  GEN      persist/persistance.go
guile: warning: failed to install locale
warning: failed to install locale: Invalid argument
Backtrace:
In ice-9/psyntax.scm:
  1235:36 19 (expand-top-sequence ((define-module (persist #) # # ?)) ?)
  1182:24 18 (parse _ (("placeholder" placeholder)) ((top) #(# # ?)) ?)
   285:10 17 (parse _ (("placeholder" placeholder)) (()) _ c&e (# #) #)
In ice-9/eval.scm:
   293:34 16 (_ #<module (#{ g77}#) 55f2082600a0>)
In ice-9/boot-9.scm:
   2874:4 15 (define-module* _ #:filename _ #:pure _ #:version _ # _ ?)
  2071:24 14 (call-with-deferred-observers #<procedure 55f20800c0f0 ?>)
  2887:24 13 (_)
   222:29 12 (map1 (((system vm loader)) ((system vm program)) (#) ?))
   222:29 11 (map1 (((system vm program)) ((system vm debug)) ((?)) ?))
   222:29 10 (map1 (((system vm debug)) ((system vm dwarf)) ((# ?)) ?))
   222:29  9 (map1 (((system vm dwarf)) ((ice-9 match)) ((ice-9 ?)) ?))
   222:29  8 (map1 (((ice-9 match)) ((ice-9 vlist)) ((ice-9 #)) (#) ?))
   222:29  7 (map1 (((ice-9 vlist)) ((ice-9 control)) ((ice-9 #)) # ?))
   222:29  6 (map1 (((ice-9 control)) ((ice-9 pretty-print)) ((?)) ?))
   222:29  5 (map1 (((ice-9 pretty-print)) ((oop goops)) ((oop #)) ?))
   222:29  4 (map1 (((oop goops)) ((oop dict)) ((persist #)) ((?)) ?))
   222:17  3 (map1 (((oop dict)) ((persist primitive)) ((# #)) (#) #))
   2803:6  2 (resolve-interface _ #:select _ #:hide _ #:prefix _ # _ ?)
In unknown file:
           1 (scm-error misc-error #f "~A ~S" ("no code for modu?" ?) ?)
In ice-9/boot-9.scm:
   752:25  0 (dispatch-exception _ _ _)

ice-9/boot-9.scm:752:25: In procedure dispatch-exception:
no code for module (oop dict)
make[2]: *** [Makefile:945: persist/persistance.go] Error 1
make[2]: Leaving directory '/home/user1/VirtualHome/src/guile-persist'
make[1]: *** [Makefile:519: all-recursive] Error 1
make[1]: Leaving directory '/home/user1/VirtualHome/src/guile-persist'
make: *** [Makefile:399: all] Error 2
-------------------------

The error seems very related to the make error for python-on-guile.

Regards,
David



On Wed, Feb 12, 2020 at 4:26 PM david larsson
<address@hidden> wrote:


On 2020-02-12 10:59, Stefan Israelsson Tampe wrote:

no code for module (persist persistance)

can you use  (persist persistance)  e.g. from the guile shell,


(use-modules  (persist persistance) )


Nope, that gives the same error. I had some issue when compiling the

stis-parser and/or guile-persist as well and solved it by adding a
symlink in /usr/local/include/ something. So Ill look into whether I

have some path/environment variable issue on my machine. Im running
PureOS which I think tracks Debian stable, so some stuff can be
pretty
old and maybe thats the reason.

Regards,
David


...

/Stefan

On Wed, Feb 12, 2020 at 10:18 AM david larsson
<address@hidden> wrote:


On 2020-02-11 21:57, Stefan Israelsson Tampe wrote:

This error is fixed in repository
/Stefan


Thanks. That solved that part. Now Im getting this error on make:

(commit 226d33163e7f1e305c0b6e2ada37209513377dff)
----------------------

Makefile:1390: warning: overriding recipe for target 'python'
Makefile:771: warning: ignoring old recipe for target 'python'
GEN      oop/pf-objects.go
guile: warning: failed to install locale
warning: failed to install locale: Invalid argument
Backtrace:
In ice-9/boot-9.scm:
2312:4 19 (save-module-excursion #<procedure 55a897256bc0 at
lang?>)
In language/scheme/compile-tree-il.scm:
31:15 18 (_)
In ice-9/psyntax.scm:
1235:36 17 (expand-top-sequence ((define-module (oop #) # (# ?)
?)) ?)
1182:24 16 (parse _ (("placeholder" placeholder)) ((top) #(# #
?)) ?)
285:10 15 (parse _ (("placeholder" placeholder)) (()) _ c&e (#
#) #)
In ice-9/eval.scm:
293:34 14 (_ #<module (#{ g77}#) 55a8972dd0a0>)
In ice-9/boot-9.scm:
2874:4 13 (define-module* _ #:filename _ #:pure _ #:version _ #
_ ?)
2071:24 12 (call-with-deferred-observers #<procedure 55a897086910
?>)
2887:24 11 (_)
222:29 10 (map1 (((oop goops)) ((oop dict) #:renamer #<proce?>)
?))
222:29  9 (map1 (((oop dict) #:renamer #<procedure 55a8972fb?>)
?))
222:29  8 (map1 (((ice-9 vlist)) ((ice-9 match)) ((system # #))
?))
222:29  7 (map1 (((ice-9 match)) ((system base message)) ((# ?))
?))
222:29  6 (map1 (((system base message)) ((language python #)) #
?))
222:29  5 (map1 (((language python guilemod)) ((ice-9 #)) ((#
?))))
222:29  4 (map1 (((ice-9 pretty-print)) ((persist
persistance))))
222:17  3 (map1 (((persist persistance))))
2803:6  2 (resolve-interface _ #:select _ #:hide _ #:prefix _ #
_ ?)
In unknown file:
1 (scm-error misc-error #f "~A ~S" ("no code for modu?"
?) ?)
In ice-9/boot-9.scm:
752:25  0 (dispatch-exception _ _ _)

ice-9/boot-9.scm:752:25: In procedure dispatch-exception:
no code for module (persist persistance)
make: *** [Makefile:1385: oop/pf-objects.go] Error 1

----------------------

Regards,
David



On Tue, Feb 11, 2020 at 8:17 AM david larsson
<address@hidden> wrote:


On 2020-02-10 21:11, Stefan Israelsson Tampe wrote:

I have now added the bytes constructor that was not working.


Thanks!



To compile from source please try use the git repository at:

https://gitlab.com/python-on-guile/python-on-guile/

see readme for how to compile and what dependencies you have.


I was able to build and install:
- guile-persist: commit

ebebb66ae6d6c47dbc406cdbcaccb5ffed2e463a

- stis-parser: commit 7673dd576abb445fbcfce8c4b6ae961ee860902e

but for python-on-guile Im getting this error on make:

--------------

Makefile:1390: warning: overriding recipe for target 'python'
Makefile:771: warning: ignoring old recipe for target 'python'
GEN      language/python/guilemod.go
guile: warning: failed to install locale
warning: failed to install locale: Invalid argument
ice-9/boot-9.scm:752:25: In procedure dispatch-exception:
Syntax error:
language/python/guilemod.scm:271:0: cond-expand: unfulfilled
cond-expand
in form (cond-expand (guile-3.0 (define-set-M

lookup-warning-type

lookup-warning-type) (define-set-M warning warning) (set!
%warning-types
w-types)) (guile-2.0 or guile-2.2 (define-M %warning-types

w-types)

(define-exp-M lookup-warning-type (lambda (name) "Return the

warning


type NAME or `#f' if not found." ((M find) (lambda (wt) (eq?

name

((M
warning-type-name) wt))) (M %warning-types))))))
make: *** [Makefile:1385: language/python/guilemod.go] Error 1

---------------

Im compiling with guile2.2

Regards,
David



Regards
Stefan

On Mon, Feb 10, 2020 at 1:14 PM david larsson
<address@hidden> wrote:


On 2020-02-09 21:36, Stefan Israelsson Tampe wrote:

in sys that is

On Sun, Feb 9, 2020 at 9:36 PM Stefan Israelsson Tampe
<address@hidden> wrote:


OKey, I changed the values from immutable lists to lists.



Great!


On Sun, Feb 9, 2020 at 9:27 PM Stefan Israelsson Tampe
<address@hidden> wrote:

Note that a lot of things are untested because I'm alone on

the

development.


Ok, I understand.

I haven't been able to build a recent version, but if you can

share

some
updated instructions, then I could perhaps help out with some
occasional
testing. I have only managed to build from the old commit

fc0d7a9

by


updating the current python-on-guile guix package locally.



netlib is not included, you can test to add the python

module

file

to a (language python module) directory


What's been working for me so far is only (load

"path/to/file.py")

and
(load-compiled "path/to/file.go").

(use-modules (a b c)) did not work for me, except to load

modules

already shipped with python-on-guile repo; (language python

module

python) etc.



I have recently added much more of the python stdlib aka

3.7

but

not

all.

Not sure what you mean by .scm file and .py fle when it

comes

to

base64
using that module in scheme gives
scheme@(guile-user)> (b64decode (b64encode "abc"))
$2 = b'abc'
scheme@(guile-user)> (b64decode (b64encode #(1 2 3)))
$3 = b'\x01\x02\x03'

Which return a bytevector if you want a string back you

need

to

interpret the bytevector back to a string


Im getting weird results when trying to output the base64
representation
of a string, take btest.py:
#import sys
import base64
def mybmethod(x):
mybytes = bytes(x, "utf-8")
encodedbytes = base64.b64encode(mybytes)
myb64string = str(encodedbytes, "utf-8")
return myb64string
#print(myb64string)
#mybmethod(sys.argv[1])

and assume btest.scm using it with:
(add-to-load-path (dirname (current-filename)))
(use-modules (language python module python))
(load "btest.py")
(define-public (mybmethodscm cmdline)
(display (mybmethod (cadr cmdline))))

With this it will not work to run the scheme file with
guile -e mybmethodscm btest.scm dfasdf

The error I got indicated that btest.py uses the bytes

procedure

from
within python-on-guile instead of from the python3 base64

lib:


-------------------

In














/home/user1/VirtualHome/src/code_guile/python-on-guile-test/btest.scm:

18:11  4 (mybmethodscm _)
In btest.py:
10:584  3 (_ "dfasdf" . _)
In oop/pf-objects.scm:
584:15  2 (create-object _ _)
567:11  1 (the-create-object _ _)
In language/python/bytes.scm:
99:6  0 Exception thrown while printing backtrace:
Unbound slot in object Error while printing exception.

language/python/bytes.scm:99:6: Wrong number of arguments to
#<procedure
7f2bab5d4560 at language/python/bytes.scm:92:0 (self) | (self

s)>


-------------------

For a moment though, I could run:

guile -e mybmethodscm btest.scm dfasdf | rev | base64 -d |

rev

# gives: dfasdf

which was also strange.



modules are a bit difficult as I use the guile module

system

and

the

python modules are different.
So nested modules needs some work. The best is to test and

see.


Ok, got it!



I will look into the sys thingies

Regards
Stefan

On Sun, Feb 9, 2020 at 8:40 PM david larsson
<address@hidden> wrote:
Thanks for your explanations, but unfortunately I still

can't

figure

out
how to use this except in the simplest of cases.

I am using the guix package python-on-guile 0.1.0-3.00a51a2

-

maybe

thats outdated?

The simple things I have managed to do, are like:

(add-to-load-path (dirname (current-filename)))
(load-compiled python-test.go)

where python-test.go is compiled with:

guild compile python-test.py --output=python-test.go
--from=python

and contains simple things, like:

f(s):
a = s + 1
return a

but if I add statements to python-test.py like:

import netaddr
def myfun(a)
<something using netaddr>

(netaddr is a module installed via: pip3 install --user

netaddr)


I receive an error about not finding the module.

I am able to add only the modules which exist in the

python-on-guile


repo, like:

import sys
import base64

but Im getting errors, for example Im not able to use

things

from

sys,
like:

sys.path.append(<somepath>)
sys.path.insert(0, <somepath>)

I was able to use some things from base64 but I only

received

weird

results when converting between bytevectors and strings

between

the

.scm
file and .py file. What works fine using python3

python-test.py

do

not
usually work when passing either a bytevector or string to

the

same

go-compiled file from the .scm file using the python-code.

Not

sure

whether there's a problem using python3 vs python2 here?

Essentially, what Im looking for is how to proceed if I

want

to

use

modules installed via the pip package manager from guile,

and

what

paths
and imports I need to make, and how I might need to wrap

them

correctly
in the scheme and python files to invoke a pip package

procedure

from
guile.

Best regards,
David

On 2020-02-09 18:59, Stefan Israelsson Tampe wrote:

I'm the author of that lib.

1)

The main bindings are reachable through (language python

module

python)

So you could now go ahead and do

(use-modules (language python module python))
;L python


And you will get a python shell that works quite ok for

one

liners


2)

If you write a module and place it in a/b/c.py
you can use the classes and functions theirin by

(use-modules (a b c))

3)
you can load a .py file as (i hope this work)
(load "a.py")

4)
If you place a module in (language python module a.py) you

can

import

ir as a usual mode as

from a import *


The documentation is for the macro framework that enables

you

to

work

with python classes and idioms like python iteration.

Hope this helps
/Stefan

On Sun, Feb 9, 2020 at 6:31 PM david larsson
<address@hidden> wrote:


Hi everyone,
I am trying to wrap my head around how to use the

python-on-guile

library, but Im struggling. Does anyone have example code

that

might


help, and which isn't too advanced?

All tips and suggestions appreciated!

Best regards,
David
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