human
Solve the following python programming problem given the following code:
def _inputhook_tk(inputhook_context) : 
    '
    Inputhook for Tk.
    Run the Tk eventloop until prompt-toolkit needs to process the next input.
    ' 
    import _tkinter 
    from six.moves import tkinter 
    root = tkinter._default_root 
    def wait_using_filehandler() : 
        '
        Run the TK eventloop until the file handler that we got from the
        inputhook becomes readable.
        ' 
        stop = [False] 
        def done(* a) : 
            stop [0] = True 
root.createfilehandler (inputhook_context.fileno (), _tkinter.READABLE, done) 
        while root.dooneevent (_tkinter.ALL_EVENTS) : 
            if stop [0] : 
                break 
root.deletefilehandler (inputhook_context.fileno ()) 
def wait_using_polling() : 
        "
        Windows TK doesn't support 'createfilehandler'.
        So, run the TK eventloop and poll until input is ready.
        " 
        while (not inputhook_context.input_is_ready ()) : 
            while root.dooneevent ((_tkinter.ALL_EVENTS | _tkinter.DONT_WAIT)) : 
                pass 
time.sleep (0.01) 
if (wait_using_filehandler is not None) : 
        if hasattr (root, 'createfilehandler') : 
            wait_using_filehandler () 
else : 
            wait_using_polling () 

    
    

    Fix the buggy line: if (wait_using_filehandler is not None) :
assistant
#Here is Python code to fix the buggy line: if (wait_using_filehandler is not None) :
.

if (root is not None) :