[modeller_usage] What is the mistake in this set of lines?

[Ashish Runthala <>]

Dear Modellers,
I wrote a script to do three template modeling for a target sequence from all the templates present in the same folder. 
The script is expected to take 1SHW, 1SHX fixed and the third one should be iteratively taken from the current folder.

MODELLER defines atom as any PDB or .atm template file and pdbfile is the keyword defined for template with chain ID. 
So when i use pdbfile for both 1SHW, 1SHX why it only takes the one with the 2nd entry. Like a normal variable initial template name changes when it is assigned to some other template. 

So what is the mistake in this set of lines? How should i solve this task. 

    for (code, code, atomfile, chain) in (('1SHWA','1SHXA','1SHX','A'),
                                           (pdbfile,pdbfile,fileName,'A')):
        mdl = model(env, file=atomfile, model_segment=('FIRST:'+chain, 'LAST:'+chain))
        aln.append_model(mdl, atom_files=code, align_codes=atomfile)



Thanks,
Ashish



Ashish Runthala,
Lecturer, Structural Biology Cell,
Biological Sciences Group,
BITS, Pilani
Rajasthan, INDIA