modules_after.py

# First Project (ModuleA)
class ModuleA:
  def __init__(self, module_b: ModuleB, module_c: ModuleC):
    print('im code from module A')
    module_b.hello()
    module_c.hello()
    
  def hello(self):
    print('hello from A')


# Second Project (ModuleB)
class ModuleB:
  def __init__(self, module_c: ModuleC):
    print('im code from module B')
    module_c.hello()
    
  def hello(self):
    print('hello from B')


# Third Project (ModuleC)
class ModuleC:
  def hello(self):
    print('hello from C')