<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def std_byte(self):
 """Copy byte from 8-bit representation."""

        try:
            return self.std_name[self.pos]
        except IndexError:
            self.failed = 1
            return ord('?')