human
Solve the following python programming problem given the following code:
def __enter__(self) : 
    if self._entered : 
        raise RuntimeError (('Cannot enter %r twice' % self)) 
self._entered = True 
    self._filters = showwarning._module.filters 
    self._module.filters = self._filters [:] 
    self._showwarning = self._module.showwarning 
    if self._record : 
        log = [] 
        def showwarning(* args, **kwargs) : 
            log.append (WarningMessage (* args, ** kwargs)) 
self._module.showwarning = showwarning 
        return log 
else : 
        return None 

    
    

    Fix the buggy line: self._filters = showwarning._module.filters
assistant
#Here is Python code to fix the buggy line: self.

self._filters = self._module.filters