def get_ins_off(self, off):
idx = <NUM_LIT:0><EOL>for i in self.get_instructions():<EOL><INDENT>if idx == off:<EOL><INDENT>return i<EOL><DEDENT>idx += i.get_length()<EOL><DEDENT>return None<EOL>
Get a particular instruction by using the address

:param off: address of the instruction
:type off: int

:rtype: an :class:`Instruction` object