How to give arguments after Here Document?

Question

I want to execute a python script via “Here Document” following some arguments in my bash shell script, as follows

python <<'__SCRIPT__'
...
__SCRIPT__
ARG1 ARG2 ...

But don't know how to give these arguments. I have tried putting them following python, following SCRIPT and a new line right after SCRIPT. But errors are reported in all of the cases when executed.

So what is the right way?

BR, RUOCHEN

Ignacio Vazquez-Abrams · Answer 1 · 2013-11-08T09:14:35.633

9

The arguments are part of the command.

python - arg1 arg2 << ...

edited Nov 08 '13 at 09:14

answered Nov 08 '13 at 08:19

Ignacio Vazquez-Abrams

776,304
153
1,341
1,358

This solution is to give the arguments to python. But what I really want is to give the arguments to the "script". – Pan Ruochen Nov 08 '13 at 08:32
2

... What did you think Python gave the arguments to? – Ignacio Vazquez-Abrams Nov 08 '13 at 08:42
Your solution looks like: python arg1 arg2 ... SCRIPT Arguments go to python and SCRIPT gets nothing What I expect is: python SCRIPT arg1 arg2 ... (simply identical to /SCRIPT arg1 arg2) Arguments go to SCRIPT and python gets nothing – Pan Ruochen Nov 08 '13 at 09:02
2

Oh, I have omitted the '-' before ARGS. So much thanks to you all. – Pan Ruochen Nov 08 '13 at 13:40

score 5 · Answer 2 · answered Nov 08 '13 at 09:52

<<__SCRIPT__ is not actually a script passed to python, it's a stream containing the script. You have to tell python where to get the script, which is - in this case. That's why python - arg1 arg2 <<'__SCRIPT__':

$ cat here-py.sh
python - foo bar <<__SCRIPT__
import sys
print(sys.argv)
__SCRIPT__
$ ./here-py.sh
['-', 'foo', 'bar']

How to give arguments after Here Document?

2 Answers2