Unicode failure about gnuplot_kernel HOT 11 OPEN

I think it is an issue with your installation. Trying out your unicode string with this notebook gives me unicode in the output.

from gnuplot_kernel.

from gnuplot_kernel.

I don't see anything attached!

What version of python is it?

from gnuplot_kernel.

from gnuplot_kernel.

from gnuplot_kernel.

Okay, I have seen the same issue at binder.

from gnuplot_kernel.

from gnuplot_kernel.

That link did work, but I tried it https://mybinder.org/v2/gh/has2k1/gnuplot_kernel/master?filepath=examples and I got the exact garbled output as in https://www.adrive.com/public/yFJpnM/Screenshot_20200510_162329.png.

After some debugging on the containers at binder , I have tracked the failure to pass on unicode to somewhere between the pexpect library (that is part of the requirements) and the gnuplot installation. For my system with the same versions of pexpect and gnuplot, unicode works well. For the binder system, pexpect with sh can pass between themselves unicode strings, while pexpect with gnuplot mess up the unicode handling

A snapshot of the debugging

Code

# Send some unicode string to the shell and see what it prints
import pexpect
spawn_cmd = '/bin/sh'
child = pexpect.spawnu(spawn_cmd, echo=False)
cmd = 'echo "β(°)"'
child.sendline(cmd)
child.readline()
res = child.before
res

# Send some unicode string to gnuplot and see what it prints
import pexpect
spawn_cmd = '/usr/bin/gnuplot'
#child = pexpect.spawn(spawn_cmd, encoding='utf-8')
child = pexpect.spawnu(spawn_cmd, encoding='utf-8')
cmd = 'print "β(°)"'
child.sendline(cmd)
child.readline()
res = child.buffer.split()[-2]
res

from gnuplot_kernel.

from gnuplot_kernel.

python3-pexpect is version 4.6.0-1

I have ruled out pexpect and its only dependency ptyprocess by testing the minimum required versions pexpect-4.2.0 and ptyprocess-0.5.0 and my system. With those versions unicode strings are handled correctly.

That effectively rules out the python packages, but not the installed CPython (esp. it's compilation environment) and the general OS environment. With that I am out of moves.

from gnuplot_kernel.

from gnuplot_kernel.