pyraf cannot find login.cl

[ljtpanda]

Hello, Dear All,

I'm quite new to iraf and pyraf. I just installed them on my MacOS. When running pyraf, I got the error message:

Warning: no login.cl found

This may further cause some other errors when running other commands, such as:

--> imstat dev$pix
Traceback (innermost last):
  File "<CL script CL1>", line 1, in <module>
pyraf.tools.irafglobals.IrafError: Undefined variable `uparm' in string `uparm$/imlimstas.par'

I tried to create a symbolic of login.cl to the working directory, or run mkiraf -c to create it. Both work well and the error messages disappear. However, I don't want to create login.cl every time I run pyraf in a new directory. It seems if I don't do this, pyraf cannot find the correct login.cl in my iraf directory automatically. How to solve the problem?

Thank you very much.

[olebole]

Please always specify which version of IRAF, PyRAF and Python you are using, and how you installed it.

PyRAF (2.2.1) searches login.cl on a number of places:

1. in the current directory,
2. ~/.iraf/login.cl,
3. /etc/iraf/login.cl,
4. hlib$login.cl

with hlib$ usually set to iraf$unix/hlibif not defined as environment variable. The last one is the final resort and should always work. Can you give the result of

--> osfn("hlib$")

on your PyRAF prompt (should be /usr/local/lib/iraf/unix/hlib/ or similarly pointing to your IRAF installation), and check that there is a login.cl in this directory?

[ljtpanda]

Thank you very much.

I installed IRAF 2.17.1 and pyraf 2.2.1. I think the python I used is that installed via anaconda, which is 3.11.7.

For IRAF, I installed the source code. For pyraf, I installed it using pip3 install pyraf.

Here is the result checking hlib$:
--> osfn("hlib$")
'/usr/local/lib/iraf/unix/hlib/'

There is a login.cl in this direction. And if I created a link of it in the working directory:
ln -s /usr/local/lib/iraf/unix/hlib/login.cl login.cl
I can start pyraf with no warnings. So I think the file is correct.

BTW, I also found another two login.cl files:

find /usr/local/lib/iraf -name login.cl

/usr/local/lib/iraf/unix/hlib/login.cl
/usr/local/lib/iraf/pkg/cl/login.cl
/usr/local/lib/iraf/pkg/ecl/login.cl

I'm not sure why pyraf cannot find login.cl in hlib$

[olebole]

OK, I found the cause. The search in hlib$ was added only after version 2.2.1 (in iraf-community/pyraf#150). You should therefore create a user default one with mkiraf -c -d for the time being. This will be fixed with the next version.

[ljtpanda]

Thank you very much. This solves the problem.