Python PEP 8: Blank lines at the beginning of a module

There is a question who treat about this but not talk about all the points I interested.

PEP 8 says about blank lines:

Separate top-level function and class definitions with two blank lines.

Then if you have:

1. A module with only a class:

   # -*- coding: utf-8 -*-
   
   
   class A(object):
       pass
   

   Do you separate the begin of the class and the encoding comment with two blank lines?

2. A module with import statement and classes:

   # -*- coding: utf-8 -*-
   
   import module
   
   
   class B(object):
       pass
   
   
   class C(object):
       pass
   

   Do you separate the import statement and the encoding comment with one blank line?

   And the import statement and the begin of the class with two blank lines?

3. And a main module:

   #!/usr/bin/env python
   # -*- coding: utf-8 -*-
   
   import module
   
   
   def main():
       a = module.A()
       return 0
   
   
   if __name__ == '__main__':
       status = main()
   

   Do you separate the import statement and the top-level function with two blank lines?

   And the end of the top-level function and the conditional statement with two blank lines?