human
Solve the following python programming problem given the following code:
@ graken () 
def _arglist_(self) : 
    def block0() : 
        self._argument_ () 
        self.ast.setlist ('@', self.last_node) 
        self._token (',') 
self._closure (self) 
    self._argument_ () 
    self.ast.setlist ('@', self.last_node) 

    
    

    Fix the buggy line: self._closure (self)
assistant
#Here is Python code to fix the buggy line: self.

self._closure (def block0()