def __init__(self, pdbfile):
""" Wrapper class for Bio.PDB which makes it convenient to
read phi/psi/omega/chi torsion angles from a PDB-file.
Arguments:
pdbfile -- The PDB file you wish to read.
"""
try:
self._parser = PDBParser(QUIET=True)
except:
# Workaround for missing QUIET keyword
# in certain versions of Biopython.
self._parser = PDBParser()
self._pdbfile = pdbfile
self._structure = self._parser.get_structure("pdb", self._pdbfile)
self._chain = self._get_first_chain(self._structure)
self._sequence = self._get_sequence_from_chain(self._chain)
