运行与matplotlib原因蟒蛇崩溃线程

Question

我有了2个非常简单的线程的程序：

• 一个用于监听串口
• 一个用于文本UI

我也有matplotlibanimation在我main()运行。它有一个scope类，它是从matplotlib的例子。

当程序开始运行，它显示的情节，一切都OK。问题是，只要用户输入密钥，程序崩溃，python就会退出，并带有致命错误。

ui线程与matplotlib和scope类无关。如果我删除创建图的代码，ui线程没有问题，并且程序运行顺利。我也注意到matplotlib我的系统上使用tkinter创建窗口。

你有为什么matplotlibanimation导致问题的任何提示或经验？不能线程与matplotlibplot使用吗？

我在命令行窗口中Windows7与Python 2.7运行此。

matplotlib版本：2.0.2 Tkinter版本：8.5

错误：

Fatal Python error: GC object already tracked 

This application has requested the Runtime to terminate it in an unusual way. 
Please contact the application's support team for more information. 

或者这个错误：

TclStackFree: incorrect freePtr. Call out of sequence? 

This application has requested the Runtime to terminate it in an unusual way. 
Please contact the application's support team for more information. 

代码：

import threading 
import serial 
from matplotlib.lines import Line2D 
import matplotlib.pyplot as plt 
import matplotlib.animation as animation 

class listner(threading.Thread): 

     def __init__(self,port): 
      threading.Thread.__init__(self) 
      self.sport=None 
      self.is_running=True 
      self.init_port(port) 

     def run(self): 
      print ' Reading from Port' 
      while self.is_running: 
       try: 
        self.sport.read(1) 
       except: 
        print 'Error reading port' 

     def init_port(self,port): 
      print '1' 
      if self.sport==None or not self.sport.is_open : 
       try: 

        self.sport = serial.Serial(port,115200) 
        self.sport.timeout = 1 
        self.sport.reset_input_buffer() 
        self.sport.reset_output_buffer() 
        self.port_open=True 
       except: 
        print " Port error Listener Initing\n",self.port_open,'\n',self.sport 
      else: 
       pass 

     def process(self): 
      pass 


class ui(threading.Thread): 

     def __init__(self): 
      threading.Thread.__init__(self)  
      self.running = True 

     def run(self): 

      print 'Starting UI:\n' 
      while self.running: 
       print ' Enter input ''S'':\n' 
       user = raw_input() 



def main(port): 

     listner_thread = None 
     try: 
      listner_thread = listner(port) 
      listner_thread.start(); 
     except: 
      print "Listener Thread Failed To Start" 
      return 

     ui_thread=None 
     try: 
      ui_thread = ui() 
      ui_thread.start()   
     except: 
      print "UI Thread Failed To Start" 
      return 

     run_charts() 



def run_charts(): 
     fig, (ax1, ax2) = plt.subplots(2, 1) 

     scope1 = Scope(ax1) 
     ani1 = animation.FuncAnimation(fig, scope1.update, emit_ch1, interval=10,blit=True) 

     scope2 = Scope(ax2) 
     ani2 = animation.FuncAnimation(fig, scope2.update, emit_ch2, interval=10,blit=True) 

     plt.show() 

def emit_ch1(): 
    yield 0.001 

def emit_ch2(): 
    yield -0.001 

class Scope(object): 
     def __init__(self, ax, maxt=2, dt=0.02): 
      self.ax = ax 
      self.dt = dt 
      self.maxt = maxt 
      self.tdata = [0] 
      self.ydata = [0] 
      self.line = Line2D(self.tdata, self.ydata) 
      self.ax.add_line(self.line) 
      self.ax.set_ylim(-.009, 0.009) 
      self.ax.set_xlim(0, self.maxt) 

     def update(self, y): 
      t = self.tdata[-1] + self.dt 
      self.tdata.append(t) 
      self.ydata.append(y) 
      self.line.set_data(self.tdata, self.ydata) 
      return self.line, 



if __name__ == '__main__': 
     main('COM11') 

Answer 1

的第一个错误，“致命的Python错误：GC对象已跟踪”，2013年被关闭以“CLOSED WONTFIX”状态，查看Bugzilla的

看来，当它被再次提出的临时修订的bug report 2015年[关于DASK]是use a single thread使用此代码：

import dask 
    dask.set_options(get=dask.async.get_sync) 

，但这个问题实际上dataframe.read_csv问题所在。

问题是eventually solved在大熊猫的更高版本。如果您升级您的matplotlib版本，那么问题很可能也会通过类似的修复解决。

希望这有助于