Question

我继承了threading.Thread和bdb.Bdb。线程需要一个run函数来调用start函数，我需要使用Bdb.run函数。我如何引用Bdb的run函数，因为我无法使用self.run进行操作？我试过超级，但我显然没有使用它，我得到TypeError：必须是类型，而不是classobj。

import sys
import os
import multiprocessing
import threading
import bdb

from bdb import Bdb
from threading import Thread

from el_tree_o import ElTreeO, _RUNNING, _PAUSED, _WAITING
from pysignal import Signal

class CommandExec(Thread, Bdb):
    '''
    Command Exec is an implementation of the Bdb python class with is a base
    debugger.  This will give the user the ability to pause scripts when needed
    and see script progress through line numbers.  Useful for command and
    control scripts.
    '''

    def __init__(self, mainFile, skip=None):
        Bdb.__init__(self,skip=skip)
        Thread.__init__(self)

        # need to define botframe to protect against an error
        # generated in bdb.py when set_quit is called before
        # self.botframe is defined
        self.botframe = None

        # self.even is used to pause execution
        self.event = threading.Event()

        # used so I know when to start debugging
        self.mainFile = mainFile
        self.start_debug = 0

        # used to run a file
        self.statement = ""

    def run(self):
        self.event.clear()
        self.set_step()
        super(bdb.Bdb,self).run(self.statement)

Answer 1

正如您在第22行调用Bdb的__init__方法一样，您可以调用其run方法：

Bdb.run(self, self.statement)

super仅在您不知道接下来需要调用哪个父类时才有用，并且您希望让Python的继承机制为您解决这个问题。在这里，您确切地知道要调用哪个函数Bdb.run，所以只需调用它。

引用继承的类函数

1 个答案: