human
Solve the following python programming problem given the following code:
@ graken ('binary') 
def _or_expr_(self) : 
    self._and_expr_ () 
    def block0() : 
        self._token ('|') 
        self._and_expr_ () 
self._closure (self) 

    
    

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

self._closure (def block0()