code: def load_app(target):
      
      tmp = app.push() # Create a new "default application"
      rv = _load(target) # Import the target module
      app.remove(tmp) # Remove the temporary added default application
      return rv if isinstance(rv, Bottle) else tmp
docs: Load a bottle application based on a target string and return the
          application object.
  
          If the target is an import path (e.g. package.module), the application
          stack is used to isolate the routes defined in that module.
          If the target contains a colon (e.g. package.module:myapp) the
          module variable specified after the colon is returned instead.