pdb.py 文件源码

def do_jump(self, arg):
        if self.curindex + 1 != len(self.stack):
            print >>self.stdout, "*** You can only jump within the bottom frame"
            return
        try:
            arg = int(arg)
        except ValueError:
            print >>self.stdout, "*** The 'jump' command requires a line number."
        else:
            try:
                # Do the jump, fix up our copy of the stack, and display the
                # new position
                self.curframe.f_lineno = arg
                self.stack[self.curindex] = self.stack[self.curindex][0], arg
                self.print_stack_entry(self.stack[self.curindex])
            except ValueError, e:
                print >>self.stdout, '*** Jump failed:', e