@property
def rdm2(self):
    '\n        Returns RMD2 if computed with compute_rdms function before\n        This is returned in Dirac (physics) notation by default (can be changed in compute_rdms with keyword)!\n        '
    if (self._rdm2 is not None):
        return self._rdm2
    else:
        print('2-RDM has not been computed. Return None for 2-RDM.')
        return None
Returns RMD2 if computed with compute_rdms function before
This is returned in Dirac (physics) notation by default (can be changed in compute_rdms with keyword)!
@property
def rdm2(self):
    '\n        Returns RMD2 if computed with compute_rdms function before\n        This is returned in Dirac (physics) notation by default (can be changed in compute_rdms with keyword)!\n        '
    if (self._rdm2 is not None):
        return self._rdm2
    else:
        print('2-RDM has not been computed. Return None for 2-RDM.')
        return None