python passing multiple args to bash
 

I have a text string I want to pass as the second arg to a bash shell.
fill = str(" -filltype FT3,"+spacing+",180' ") # must included the trailing single quote and spaces

my python line is :

subprocess.Popen("$HOME/bin/mirror-above.sh "+gap, fill, stdout=PIPE, shell=True).communicate()[0]

the first arg "gap" works great and the bash shell uses it as $1
I need "fill" passed along as $2 intact

here is the bash line:

FILL = $2
pstoedit -flat .01 -yshift $YSHIFT -usebbfrominput -f 'hpgl: -pencolorsfromfile -penplotter $FILL in >> out

as you can see after the -f it has to be in single quotes and $FILL will complete the single quote

Nothing is getting passed as a second arg from python, I did have the first word at one time but that was 85 tries ago and forgot how I did it!

The bash script complains about an unterminated quote.

Well assuming they are both strings, is it not a simple case of replacing the comma with a concatenated space?

error
 

/bin/sh: Syntax error: Unterminated quoted string
I've been getting this error for hours!
FILL=$2
echo $2
echo $FILL
In the shell prints nothing...
I also tried removing the trailing ' from python fill variable and add it to the command string
subprocess.Popen("$HOME/bin/mirror-above.sh "+gap + " " + fill + "'", stdout=PIPE, shell=True).communicate()[0]

still same error....
still seems like it's not getting passed
it's for sure assigned to fill as
print fill gets -filltype FT3,10,90

I think it would be better not to let the shell perform argument splitting, it's too hard to get the multiple levels of quoting right.

done!
 

I finally got it had to add some quotes around the fill arg and edit the shell script a lot but hey it works great now.

Thanks for all your help!

Glad you found a solution. Would you mind posting Popen line to see what format you found worked?

solution
 

python =

subprocess.Popen([os.getenv("HOME")+"/bin/mirror-above.sh", gap, 'fill'], shell=False, stdout=subprocess.PIPE)

bash =

FILL=" -filltype FT3,$2"
pstoedit -v -flat .01 -yshift $YSHIFT -xscale $SCALE -yscale $SCALE -usebbfrominput -f "hpgl:-pencolorsfromfile -penplotter ${FILL}"