优化Python/Lib/dis.py

将Python/Lib/dis.py里面的

    def _disassemble(self, lineno_width=3, mark_as_current=False,names=None):
        """Format instruction details for inclusion in disassembly output

        *lineno_width* sets the width of the line number field (0 omits it)
        *mark_as_current* inserts a '-->' marker arrow as part of the line
        """
        fields = []
        # Column: Source code line number
        if lineno_width:
            if self.starts_line is not None:
                lineno_fmt = "%%%dd" % lineno_width
                fields.append(lineno_fmt % self.starts_line)
            else:
                fields.append(' ' * lineno_width)
        # Column: Current instruction indicator
        if mark_as_current:
            fields.append('-->')
        else:
            fields.append('   ')
        # Column: Jump target marker
        if self.is_jump_target:
            fields.append('>>')
        else:
            fields.append('  ')
        # Column: Instruction offset from start of code sequence
        fields.append(repr(self.offset).rjust(4))
        # Column: Opcode name

        fields.append(self.opname.ljust(20));
 
        # Column: Opcode argument
        if self.arg is not None:
            fields.append(repr(self.arg).rjust(5))
            # Column: Opcode argument details
            if self.argrepr:
                fields.append('(' + self.argrepr + ')')
        return ' '.join(fields).rstrip()

改为

    def _disassemble(self, lineno_width=3, mark_as_current=False,names=None):
        """Format instruction details for inclusion in disassembly output

        *lineno_width* sets the width of the line number field (0 omits it)
        *mark_as_current* inserts a '-->' marker arrow as part of the line
        """
        fields = []
        # Column: Source code line number
        if lineno_width:
            if self.starts_line is not None:
                lineno_fmt = "%%%dd" % lineno_width
                fields.append(lineno_fmt % self.starts_line)
            else:
                fields.append(' ' * lineno_width)
        # Column: Current instruction indicator
        if mark_as_current:
            fields.append('-->')
        else:
            fields.append('   ')
        # Column: Jump target marker
        if self.is_jump_target:
            fields.append('>>')
        else:
            fields.append('  ')
        # Column: Instruction offset from start of code sequence
        fields.append(repr(self.offset).rjust(4))
        # Column: Opcode name

#       fields.append(self.opname.ljust(20));
        #zhao4zhong1
        if self.opname=='<'+str(self.opcode)+'>':
            fields.append(self.opname.ljust(28));
        else:
            fields.append(self.opname.ljust(24)+('_' + str(self.opcode)).rjust(4));

        # Column: Opcode argument
        if self.arg is not None:
            fields.append(repr(self.arg).rjust(5))
            # Column: Opcode argument details
            if self.argrepr:
                fields.append('(' + self.argrepr + ')')
        #zhao4zhong1
        else:
            if 1<self.opcode and self.opcode<len(names):
                fields.append('      (' + list(names)[self.opcode] + ')')
        return ' '.join(fields).rstrip()

会有惊喜。货卖识家！