Python中”AttributeError: function object has no attribute”错误解决方法详解

在Python中，如果你尝试调用一个函数，但该函数没有被定义，你可能会遇到“AttributeError: function object has no attribute”错误。这通常是由于以下原因之一：

2、解决方案

要解决此错误，请检查以下内容：

在本文中，我们将通过一个具体的例子来演示如何解决此错误。

代码例子

class FuncThread(threading.Thread):
    def __init__(self, target, *args):
        self._target = target
        self._args = args
        threading.Thread.__init__(self)

    def run(self):
        self._target(*self._args)

def datapaths(ipaddress, testlogfile):
    #initialize logging system
    testlogger = logging.getLogger("testlogger")
    testlogger.setLevel(logging.DEBUG)
    file = open(testlogfile,'w')
    file.close()
    # This handler writes everything to a file.
    h1 = logging.FileHandler(testlogfile)
    f = logging.Formatter("%(levelname)s %(asctime)s %(funcName)s %(lineno)d %(message)s")
    h1.setFormatter(f)
    h1.setLevel(logging.DEBUG)
    testlogger.addHandler(h1)
    mylib = hpclib.hpclib(ipaddress)
    for i in range(10):
        t1=datetime.now().time()
        (code, val) = datapaths.listDatapaths(mylib)
        t2=datetime.now().time()
        diff=t2-t1
        logger.debug('RETURN code: ', code)
        logger.debug('Time taken in seconds: ',diff.seconds)

    testlogger.removeHandler(h1)

# Passing ipaddress of controller and log file name
t1 = FuncThread(datapaths, "103.0.1.40", "datapaths.log")
t1.start()
t1.join()

在这个例子中，我们试图从一个函数datapaths中调用另一个函数listDatapaths。但是，datapaths函数没有定义listDatapaths函数。因此，我们得到了“AttributeError: function object has no attribute”错误。

要解决此错误，我们可以将listDatapaths函数作为参数传递给datapaths函数。这样，datapaths函数就可以调用listDatapaths函数了。

修改后的代码如下：

class FuncThread(threading.Thread):
    def __init__(self, target, *args):
        self._target = target
        self._args = args
        threading.Thread.__init__(self)

    def run(self):
        self._target(*self._args)

def datapaths(ipaddress, testlogfile, listDatapaths):
    #initialize logging system
    testlogger = logging.getLogger("testlogger")
    testlogger.setLevel(logging.DEBUG)
    file = open(testlogfile,'w')
    file.close()
    # This handler writes everything to a file.
    h1 = logging.FileHandler(testlogfile)
    f = logging.Formatter("%(levelname)s %(asctime)s %(funcName)s %(lineno)d %(message)s")
    h1.setFormatter(f)
    h1.setLevel(logging.DEBUG)
    testlogger.addHandler(h1)
    mylib = hpclib.hpclib(ipaddress)
    for i in range(10):
        t1=datetime.now().time()
        (code, val) = listDatapaths(mylib)
        t2=datetime.now().time()
        diff=t2-t1
        logger.debug('RETURN code: ', code)
        logger.debug('Time taken in seconds: ',diff.seconds)

    testlogger.removeHandler(h1)

# Passing ipaddress of controller and log file name
def listDatapaths(mylib):
    return mylib.listDatapaths()

t1 = FuncThread(datapaths, "103.0.1.40", "datapaths.log",listDatapaths)
t1.start()
t1.join()

现在，这段代码应该可以正常运行了。

作者：qq^^614136809