[Biopython-dev] [Bug 2781] New: Bio.PDB Structure instances cannot be deepcopied

[bugzilla-daemon at portal.open-bio.org]

http://bugzilla.open-bio.org/show_bug.cgi?id=2781

           Summary: Bio.PDB Structure instances cannot be deepcopied
           Product: Biopython
           Version: 1.49
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: minor
          Priority: P3
         Component: Main Distribution
        AssignedTo: biopython-dev at biopython.org
        ReportedBy: klaus.kopec at tuebingen.mpg.de


For some reason, copy.deepcopy() of a Structure instance results in:

Exception RuntimeError: 'maximum recursion depth exceeded while calling a
Python object' in <type 'exceptions.AttributeError'> ignored

for most PDB files I tried.

Maybe implementing some __deepcopy__ methods might help, but I am unsure, as I
did not perform profound research concerning this bug.

My system: Kubuntu 8.10 64-Bit, Python 2.6.1


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