Python '；多收集'；对象不可调用

所以我得到的错误是

TypeError:“PolyCollection”对象不可调用

。我该如何解决这个问题

我试图用Python和Matplotlib创建一个动态更新的直方图，并使用Tkinter显示。正如您在下面的代码中所看到的，我使用Matplotlib的

hexbin

函数通过传递多个列表来创建图形；年龄、体重和身高。我创建的

UpdateGraph

方法是在一个单独的

线程

上生成的无限循环，它检查新数据是否已准备好绘制图表。如果是，则跳回到

主线程

，通过清除图形、绘制数据、添加轴标题，然后绘制画布来更新图形

创建图表（我很确定所有这些都没问题，不会引起任何问题。）

更新图形方法

def UpdateGraphs(self):
    while True:
        dataFinalIndex = len(self.mainController.PDWs)

        ages    = []
        weights = []
        heights = []

        for person in self.persons:
            ages.append(person.age)
            weights.append(person.weight)
            heights.append(person.height)

        root.after_idle(self.avhplot.clear)
        root.after_idle(self.wvhPlot.clear)

        """ Here is where the error comes from"""
        root.after_idle(self.avhplot.hexbin(heights, ages, cmap = matplotlib.cm.jet,
                                            mincnt = 1, bins = "log", extent = self.avhExtent))
        root.after_idle(self.avhplot.hexbin(heights, weights, cmap = matplotlib.cm.jet,
                                            mincnt = 1, bins = "log", extent = self.wvhExtent))
        """             End of Error          """

        root.after_idle(self.avhPlot.set_ylabel, ("Ages")
        #The rest of the labels are set like this as well

        root.after_idle(self.avhCanvas.draw)
        root.after_idle(self.wvhCanvas.draw)

当我试图绘制数据时抛出错误。我不知道为什么会发生这种情况，因为这在过去是行之有效的。奇怪的是，它会在第一次（即使有错误）绘制数据，但不会在第二次

堆栈跟踪

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 1410, in __call__
    return self.func(*args)
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 495, in callit
    func(*args)
TypeError: 'PolyCollection' object is not callable

    self.avhplot.hexbin(heights, ages, cmap = matplotlib.cm.jet,
                                        mincnt = 1, bins = "log", extent = self.avhExtent)
    self.avhplot.hexbin(heights, weights, cmap = matplotlib.cm.jet,
                                        mincnt = 1, bins = "log", extent = self.wvhExtent)

---

注意：上面的所有代码都只是示例。如果有任何打字错误，它们在我的实际代码中是不存在的。

我发现了问题所在-

我假设我需要跳回主线程以绘制数据，但出于某种原因，在清除和绘制数据的函数没有必要之前添加

root.add_idle

，从而导致问题

已更正的代码

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 1410, in __call__
    return self.func(*args)
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 495, in callit
    func(*args)
TypeError: 'PolyCollection' object is not callable

    self.avhplot.hexbin(heights, ages, cmap = matplotlib.cm.jet,
                                        mincnt = 1, bins = "log", extent = self.avhExtent)
    self.avhplot.hexbin(heights, weights, cmap = matplotlib.cm.jet,
                                        mincnt = 1, bins = "log", extent = self.wvhExtent)