qiskit/circuit/register.py
def check_range(self, j):
        """Check that j is a valid index into self."""
        if isinstance(j, int):
            if j < 0 or j >= self.size:
                raise QiskitIndexError("register index out of range")
            elif isinstance(j, slice):
                if j.start < 0 or j.stop >= self.size or (j.step is not None and
                                                          j.step <= 0):
                    raise QiskitIndexError("register index slice out of range")
def check_range(self, j):
        """Check that j is a valid index into self."""
        if isinstance(j, int):
            if j < 0 or j >= self.size:
                raise QiskitIndexError("register index out of range")
            elif isinstance(j, slice):
                if j.start < 0 or j.stop >= self.size or (j.step is not None and
                                                          j.step <= 0):
                    raise QiskitIndexError("register index slice out of range")
def check_range ( self , j ) : if isinstance ( j , int ) : if j < 0 or j >= self . size : raise QiskitIndexError ( "register index out of range" ) elif isinstance ( j , slice ) : if j . start < 0 or j . stop >= self . size or ( j . step is not None and j . step <= 0 ) : raise QiskitIndexError ( "register index slice out of range" )
Check that j is a valid index into self.
Check that j is a valid index into self .