def Call(func_name, args=None, prefix=None):
 node = Node(syms.power, [func_name, ArgList(args)])
 if (prefix is not None):
  node.prefix = prefix
 return node

def Call ( func_name , args = None , prefix = None ) : node = Node ( syms . power , [ func_name , ArgList ( args ) ] ) if ( prefix is not None ) : node . prefix = prefix return node
a function call .