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Прочитав много постов здесь, я все еще не нашел решения своей проблемы.

Я использую Raspberrypi и подключаюсь к нему через SSH. Я пытаюсь запустить скрипт python, который имеет функциональность Tkinter.

Я попытался использовать следующие два подхода из предыдущих обсуждений этой ошибки без успеха:

#1 Подход: export MPLBACKEND=TKAgg перед вызовом скрипта.

#2 Подход: используйте следующие команды в соответствующем порядке:

 import matplotlib  matplotlib.use("TkAgg") import matplotlib.pyplot as plt  

Есть идеи, как это решить?

Ошибка:

 import matplotlib.pyplot as plt  File "/home/pi/imu_project/venv/lib/python3.7/site-packages/matplotlib/pyplot.py", line 2500, in lt;modulegt;  switch_backend(rcParams["backend"])  File "/home/pi/imu_project/venv/lib/python3.7/site-packages/matplotlib/pyplot.py", line 288, in switch_backend  newbackend, required_framework, current_framework)) ImportError: Cannot load backend 'TkAgg' which requires the 'tk' interactive framework, as 'headless' is currently running  

Я также добавил сценарий:

 # -*- coding: utf-8 -*- from tkinter import * from tkinter import ttk import csv import datetime from mpu6050 import mpu6050  import matplotlib  matplotlib.use("TkAgg") import matplotlib.pyplot as plt   class PlotRecAccGyro():  def __init__(self, parent):  self.parent = parent  self.parent.title('MPU6050 - Acceleration and Gyroscope')  self.frame = Frame(self.parent)  self.frame.pack(fill=BOTH, expand=1)  self.parent.resizable(width=False, height=False)  self.plot_trigger = True  self.record_trigger = False   self.var_all = IntVar()  self.var_plot = IntVar()  self.var_rec = IntVar()  self.accgyro_chkbtn_state = []  self.chkbtn_list = []   # Call MPU6050 class  self.mpu = mpu6050(0x68)   # LabelFrame - Select components  self.labelframe_comp = LabelFrame(self.frame, text='Select components')  self.labelframe_comp.grid(row=0, column=0, columnspan=3, sticky=N   E   W   S)  self.labelframe_comp.grid_configure(padx=5, pady=5)   # LabelFrame - Options to plot and record  self.labelframe_opt = LabelFrame(self.frame, text='Options - Plot and Record')  self.labelframe_opt.grid(row=0, column=3, columnspan=3, sticky=N   E   W   S)  self.labelframe_opt.grid_configure(padx=5, pady=5)   # Checkbuttons - Acceleration  for i, j in enumerate(['Acc_x', 'Acc_y', 'Acc_z']):  self.var_acc = IntVar()  self.acc_chkbtn = Checkbutton(self.labelframe_comp, text=j, variable=self.var_acc,  command=self.components_chk_func, padx=5, pady=5)  self.acc_chkbtn.grid(row=i, column=0)  self.accgyro_chkbtn_state.append(self.var_acc)  self.chkbtn_list.append(self.acc_chkbtn)   # Checkbuttons - Gyroscope  for i, j in enumerate(['Gyro_x', 'Gyro_y', 'Gyro_z']):  self.var_gyro = IntVar()  self.gyro_chkbtn = Checkbutton(self.labelframe_comp, text=j, variable=self.var_gyro,  command=self.components_chk_func, padx=5, pady=5)  self.gyro_chkbtn.grid(row=i, column=1)  self.accgyro_chkbtn_state.append(self.var_gyro)  self.chkbtn_list.append(self.gyro_chkbtn)   # Checkbutton - All  self.all_chkbtn = Checkbutton(self.labelframe_comp, text='All', variable=self.var_all,  command=self.all_chk_func, padx=5, pady=5)  self.all_chkbtn.grid(row=1, column=2)   # Button - Plot  self.plot_chkbtn = ttk.Button(self.labelframe_opt, text='Start Plotting',  command=lambda: self.plot_start_stop('plt_btn'))  self.plot_chkbtn.grid(row=0, column=0, sticky=N   E   W   S, padx=5, pady=10)  self.plot_chkbtn.configure(state='disabled')   # Button - Record to a file  self.rec_chkbtn = ttk.Button(self.labelframe_opt, text='Start Recording',  command=lambda: self.record_start_stop('rec_btn'))  self.rec_chkbtn.grid(row=1, column=0, sticky=N   E   W   S, padx=5, pady=10)  self.rec_chkbtn.configure(state='disabled')   # Label - File name  self.rec_text = Label(self.labelframe_opt, text='to file (.csv)')  self.rec_text.grid(row=1, column=1, sticky=N   E   W   S)   # Entry - File name (Default name: SensorDataFile)  self.file_name = ttk.Entry(self.labelframe_opt)  self.file_name.insert(0, 'SensorDataFile')  self.file_name.grid(row=1, column=2, sticky=N   E   W   S, padx=5, pady=10)  self.file_name.configure(state='disabled')   # Function called on clicking on 'All' checkbutton  def all_chk_func(self):  if [i.get() for i in self.accgyro_chkbtn_state] != ([1] * 6):  [i.set(1) for i in self.accgyro_chkbtn_state]  self.plot_chkbtn.configure(state='normal')  else:  [i.set(0) for i in self.accgyro_chkbtn_state]  self.plot_chkbtn.configure(state='disabled')   # Function called on clicking on 'Record' checkbutton  def rec_chk_func(self):  if self.var_rec.get() == 1:  self.file_name.configure(state='normal')  else:  self.file_name.configure(state='disabled')   # Function called on clicking on acceleration or gyroscope checkbuttons  def components_chk_func(self):  if (0 in [i.get() for i in self.accgyro_chkbtn_state]):  self.var_all.set(0)  else:  self.var_all.set(1)  if (1 in [i.get() for i in self.accgyro_chkbtn_state]):  self.plot_chkbtn.configure(state='normal')  else:  self.plot_chkbtn.configure(state='disabled')   # Function called on clicking on 'Start plotting' or 'Stop plotting' button  def plot_start_stop(self, btn_name):  if self.plot_chkbtn['text'] == 'Start Plotting':  self.plot_chkbtn['text'] = 'Stop Plotting'  self.rec_chkbtn.configure(state='normal')  self.file_name.configure(state='normal')  self.all_chkbtn.configure(state='disabled')  for i in self.chkbtn_list:  i.configure(state='disabled')  self.plot_trigger = True  self.record_trigger = False   n_plots = [i.get() for i in self.accgyro_chkbtn_state]  acc_n_plots = n_plots[0:3]  gyro_n_plots = n_plots[3:6]   time_values = [i for i in range(50, 0, -1)]  acc_values = [[0] * 50, [0] * 50, [0] * 50]  gyro_values = [[0] * 50, [0] * 50, [0] * 50]   plt.ion()  acc_legends = ['Acc_x', 'Acc_y', 'Acc_z']  gyro_legends = ['Gyro_x', 'Gyro_y', 'Gyro_z']  if (1 in acc_n_plots) and (1 in gyro_n_plots):  fig, ax = plt.subplots(2, 1, figsize=(10, 7))  ax[0].set_xlim(50, 0)  ax[1].set_xlim(50, 0)  ax[0].set_ylim([-30, 30])  ax[1].set_ylim([-300, 300])  for i, (title, y_axis_label) in enumerate(  [('Acceleration', 'Acceleration [m/s^2]'), ('Gyroscope', 'Angular velocity [deg/s]')]):  ax[i].set_title(title)  ax[i].set_ylabel(y_axis_label)  ax[i].set_xlabel('Latest 50 readings')  ax[i].grid()  acc_plot_list = [ax[0].plot(time_values, acc_values[0], label=acc_legends[i])[0] if j == 1 else 0 for  i, j in enumerate(acc_n_plots)]  gyro_plot_list = [ax[1].plot(time_values, gyro_values[0], label=gyro_legends[i])[0] if j == 1 else 0 for  i, j in enumerate(gyro_n_plots)]  ax[0].legend(loc='upper left', fancybox=True, shadow=True)  ax[1].legend(loc='upper left', fancybox=True, shadow=True)  else:  fig, ax = plt.subplots(1, 1, figsize=(10, 4))  ax.set_xlim(50, 0)  if 1 in acc_n_plots:  acc_plot_list = [ax.plot(time_values, acc_values[0], label=acc_legends[i])[0] if j == 1 else 0 for  i, j in enumerate(acc_n_plots)]  ax.set_title('Acceleration')  ax.set_xlabel('Latest 50 readings')  ax.set_ylabel('Acceleration [m/s^2]')  ax.set_ylim([-30, 30])  ax.grid()  else:  gyro_plot_list = [ax.plot(time_values, gyro_values[0], label=gyro_legends[i])[0] if j == 1 else 0  for i, j in enumerate(gyro_n_plots)]  ax.set_title('Gyroscope')  ax.set_xlabel('Latest 50 readings')  ax.set_ylabel('Angular velocity [deg/s]')  ax.set_ylim([-300, 300])  ax.grid()  ax.legend(loc='upper left', fancybox=True, shadow=True)  plt.tight_layout()   while self.plot_trigger:  current_time = datetime.datetime.now()  accel_data = self.mpu.get_accel_data()  gyro_data = self.mpu.get_gyro_data()  current_acc = [accel_data['x'], accel_data['y'], accel_data['z']]  current_gyro = [gyro_data['x'], gyro_data['y'], gyro_data['z']]   for i, j in enumerate(acc_n_plots):  if j == 1:  acc_values[i].append(current_acc[i])  del acc_values[i][0]  acc_plot_list[i].set_ydata(acc_values[i])  for i, j in enumerate(gyro_n_plots):  if j == 1:  gyro_values[i].append(current_gyro[i])  del gyro_values[i][0]  gyro_plot_list[i].set_ydata(gyro_values[i])   if self.record_trigger:  row = [current_time.strftime('%Y-%m-%d'), current_time.strftime('%H:%M:%S'),  current_time.strftime('%f')]  row = row   [i for i, j in  zip(current_acc   current_gyro, [i.get() for i in self.accgyro_chkbtn_state]) if  j == 1]  self.row_to_write.writerow(row)  plt.draw()  plt.pause(0.0001)  plt.close('all')   elif self.plot_chkbtn['text'] == 'Stop Plotting':  self.plot_chkbtn['text'] = 'Start Plotting'  self.rec_chkbtn.configure(state='disabled')  self.file_name.configure(state='disabled')  self.all_chkbtn.configure(state='normal')  for i in self.chkbtn_list:  i.configure(state='normal')  self.plot_trigger = False  self.record_trigger = False   # Function called on clicking on 'Start writing' or 'Stop writing' button  def record_start_stop(self, btn_name):  if self.rec_chkbtn['text'] == 'Start Recording':  self.rec_chkbtn['text'] = 'Stop Recording'  self.plot_chkbtn.configure(state='disabled')  self.file_name.configure(state='disabled')  print('Started recording sensor data...')   if self.file_name.get() != '':  filename = self.file_name.get()  else:  filename = 'NoFileName'  self.file_to_write = open(filename   '.csv', 'w') # Open the file  self.row_to_write = csv.writer(self.file_to_write, lineterminator='n')  column_titles = ['Daten(YY:MM:DD)', 'Timen(HH:MM:SS)', 'Timen(µs)']  column_titles = column_titles   [i for i, j in zip(  ['Axn(m/s^2)', 'Ayn(m/s^2)', 'Azn(m/s^2)', 'Gxn(deg/s)', 'Gyn(deg/s)', 'Gzn(deg/s)'],  [i.get() for i in self.accgyro_chkbtn_state]) if j == 1]  self.row_to_write.writerow(column_titles)  self.record_trigger = True   elif self.rec_chkbtn['text'] == 'Stop Recording':  self.rec_chkbtn['text'] = 'Start Recording'  self.plot_chkbtn.configure(state='normal')  self.file_name.configure(state='normal')  print('Stopped recording sensor data...')  self.record_trigger = False  self.file_to_write.close()   if __name__ == '__main__':  root = Tk()  plotrectool = PlotRecAccGyro(root)  root.resizable(width=False, height=False)  root.mainloop()  

Решение:

Чтобы загрузить и использовать MobaXterm.