如何从main访问python类方法以及如何在另一个python文件中传输和访问变量

Question

我有带有testFirewallS8类和一些方法的S8Test.py。 我想从主方法访问此类内部声明的方法。 并从该方法设置变量，另一个python文件包含要修改的相同变量。 我怎样才能做到这一点：

    #! /usr/bin/env python    
    __author__ = 'Milson Munakami'    
    __revision__ = '0.0.2'      
    import json    
    import urllib    
    import httplib    
    from scapy.all import *

    import unittest
    import os, sys, socket, struct, select, time 
    from threading import Thread     

    import logging    
    import traceback  

    from mininet.net import Mininet    
    from mininet.node import OVSSwitch, OVSKernelSwitch, Controller, RemoteController    
    from mininet.log import setLogLevel, info    
    from mininet.cli import CLI 

    class TestFirewallS8( unittest.TestCase ):
        def setUp(self): 
            self.controllerIp="127.0.0.1"    
            self.switch = "00:00:00:00:00:00:00:01"    
            self.destinationIp = "10.0.0.1"    
            self.startTime_ = time.time()    
            self.failed = False    
            self.reportStatus_ = True   
            self.name_ = "Firewall"    
            self.log = logging.getLogger("unittest")   

            "Create an empty network and add nodes to it."    
            self.net = Mininet( controller=RemoteController )    
            #Want to move this method call from outside the setUp method because it need to be initiated only once for the whole test but 
            #it need to access the class variables and pass it to another python file i.e. Events.py to perform some task on the object i.e. self    
            #self.CreateNet()    

        def createNet(self):    
            print "Me"

            info( '*** Adding controller\n' )    
            self.net.addController( 'c0' , controller=RemoteController,ip= "127.0.0.1", port=6633)    
            info( '*** Adding hosts\n' )    
            h1 = self.net.addHost( 'h1', ip='10.0.0.1' )    
            h2 = self.net.addHost( 'h2', ip='10.0.0.2' )    
            h3 = self.net.addHost( 'h3', ip='10.0.0.3' )  
            info( '*** Adding switch\n' )    
            s1 = self.net.addSwitch( 's1' )      
            info( '*** Creating links\n' )    
            self.net.addLink( h1, s1 )    
            self.net.addLink( h2, s1 )    
            self.net.addLink( h3, s1 )    

        def setFinalcondition(self):    
            Precondition.SetFinalcondition(self)  
            info( '*** Stopping network' )    
            self.net.stop()

        def testCreateFlow(self):    
            Events.createFlow(self)

def suite():
        suite = unittest.TestSuite()
        suite.addTest(unittest.makeSuite(TestFirewallS8))
        return suite

    if __name__ == '__main__':    
        #How to get run the method of testFirewallS8 class and set the variable of it like self.net
        suiteFew = unittest.TestSuite(testCreateFlow)
        TestFirewallS8("createNet")

在另一个Events.py中，我有：

def createFlow(self):   
    info( '*** Starting network\n')
    self.net.start()

    info( '*** Testing network connecivity\n')  
    #self.net.pingAll()
    h1 = self.net.get('h1') 
    h3 = self.net.get('h3') 
    h1.cmd('ping -c1 %s' % h3.IP())

Answer 1

我不清楚您要问的是什么，但是如果您有一个类定义：

class MyClass(object):
    def __init__(self, name):
        self.name = name

    def big_name(self):
        print(self.name.upper())

实例化它（ MyClass('Bob') ）之后，将其分配给变量。

bob = MyClass('Bob')

然后，您只需访问其属性即可执行该类实例的方法。

bob.big_name # accesses the "big_name" attribute on "bob": a bound method
bob.big_name() # executes the bound method

属性也可以是变量，您也可以自由访问和重新分配它们：

bob.name # accesses the "name" attribute on "bob": a string
bob.name = 'Robert' # reassigns the "name" attribute