運行與matplotlib原因蟒蛇崩潰線程

Question

我有了2個非常簡單的線程的程序：

• 一個用於監聽串口
• 一個用於文本UI

我也有matplotlibanimation在我main()運行。它有一個scope類，它是從matplotlib的例子。

當程序開始運行，它顯示的情節，一切都OK。問題是，只要用戶輸入密鑰，程序崩潰，python就會退出，並帶有致命錯誤。

ui線程與matplotlib和scope類無關。如果我刪除創建圖的代碼，ui線程沒有問題，並且程序運行順利。我也注意到matplotlib我的系統上使用tkinter創建窗口。

你有爲什麼matplotlibanimation導致問題的任何提示或經驗？不能線程與matplotlibplot使用嗎？

我在命令行窗口中Windows7與Python 2.7運行此。

matplotlib版本：2.0.2 Tkinter版本：8.5

錯誤：

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. 

或者這個錯誤：

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. 

代碼：

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

的第一個錯誤，「致命的Python錯誤：GC對象已跟蹤」，2013年被關閉以「CLOSED WONTFIX」狀態，查看Bugzilla的

看來，當它被再次提出的臨時修訂的bug report 2015年[關於DASK]是use a single thread使用此代碼：

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

，但這個問題實際上dataframe.read_csv問題所在。

問題是eventually solved在大熊貓的更高版本。如果您升級您的matplotlib版本，那麼問題很可能也會通過類似的修復解決。

希望這有助於