human
Solve the following python programming problem given the following code:
def ExpandExpression(stack) : 
    'Convert stack into the form of factor * field + constant.

  Arguments:
    stack: The postfix expression wished to be expanded.

  Returns:
    The infix string of stack iff stack is unencrypted. Otherwise, expands
    stack into the form of factor * field + constant.
  ' 
    def IsEncrypted(tokens) : 
        for token in tokens : 
            if util.IsEncrypted (token) : 
                return True 
return False 
if (not IsEncrypted (stack)) : 
        return [[[1.0, ToInfix (IsEncrypted)]], 0.0] 
return _ExpandExpression (stack) 

    
    

    Fix the buggy line: return [[[1.0, ToInfix (IsEncrypted)]], 0.0]
assistant
#Here is Python program to fix the buggy line: return [[[1.

return [[[1.0, ToInfix (stack)]], 0.0]