title: How to get Class diagram from Python source code?
body: <p>I try to get a class diagram from Python source code in <code>Client</code> folder with <code>pyreverse</code> but it requires <code>__init__.py</code></p>
  <pre><code>(venv) C:\Users\User\Desktop\project&gt; pyreverse Client
  parsing Client\__init__.py...
  Failed to import module Client\__init__.py with error:
  No module named Client\__init__.py.
  </code></pre>
  <p>I don't find any solution for this. Is there a way to get the diagram?</p>
  <p><strong>Update:</strong>
  There are many files in <code>Client</code> folder:</p>
  <pre><code>Client.py
  GUI.py
  script.py
  ...
  </code></pre>
  <p>This is a part of the <code>Client.py</code> code:</p>
  <pre><code>import threading
  
  
  class Client:
      def __init__(self):
          self.socket = None
          self.listen_socket = None
          self.buff_dict = {}
          self.message_list_dict = {}
          self.lock = threading.Lock()
          self.target = None
          self.listen_flag = True
  </code></pre>
  <p>This is a part of the <code>GUI.py</code> code:</p>
  <pre><code>import tkinter as tk
  
  
  class Window(object):
      def __init__(self, title, font, client):
          self.title = title
          self.font = font
          self.client = client
          self.root = tk.Tk()
          self.root.title(title)
          self.build_window()
  
      def build_window(self):
          pass
  
  
  class LoginWindow(Window):
      def __init__(self, client, font):
          super(LoginWindow, self).__init__('Login', font, client)
          self.build_window()
  </code></pre>