title: matplotlib() missing 1 required positional argument: 'i'
body: <pre><code>def matplotlib(i):
  
      graph_data = open('sampleData.txt', 'r').read()
      lines = graph_data.split('\n')
      xs = []
      ys = []
      for line in lines:
          if len(line) &gt;1:
              x, y = line.split(',')
              xs.append(x)
              ys.append(y)
  
      fig.clear()
  
      'Limits'
      ax = plt.gca()
      ax.set_xlim([80, -80])
      ax.set_ylim([42, -42])
      plt.axis('equal')
  
      'Labels'
      plt.xticks([-16, -32, -48, -64, -80, 0, 16, 32, 48, 64, 80])
      plt.yticks([-42, -28, -14, 0, 14, 28, 42])
  
      plt.show()
  
      plt.scatter(xs, ys)
  
  'Toolbar Buttons'
  
  insertButt = Button(toolbar, text="Matplotlib TST", fg='Dark Red', bg="Dim Grey", activebackground='Dim Grey',
                      activeforeground='Dark Red', command=matplotlib).pack(side=LEFT, padx=2, pady=2)
  
  ani = animation.FuncAnimation(fig, matplotlib, interval=1000)
  </code></pre>
  
  <p>The problem occurs when I try to run the function using a button. It works fine without the use of a button. I get the error, </p>
  
  <p>matplotlib() missing 1 required positional argument: 'i'</p>
  
  <p>I tried to fix this by simply removing the, i, then I got the error,</p>
  
  <p>matplotlib() takes 0 positional arguments but 1 was given</p>
  
  <p>I also tried putting (i) after command=matplotlib(i) in my button, my graph turned blank, and then I got this error,</p>
  
  <p>matplotlib() takes 0 positional arguments but 1 was given</p>
  
  <p>I am just trying to find to find out how to make a live graph, what the, i, even means, and I'm not sure why it doesn't work only when I run it with a button in Tkinter.</p>