human
Solve the following python programming problem given the following code:
def get_async(self, urls, callback) : 
    def get(url, headers) : 
        resp = requests.get (url, headers = headers) 
        if resp : 
            si = self.process_response (resp) 
            callback (si, resp.url) 
@ asyncio.coroutine 
    def run(urls, concurrency, loop) : 
        urls = list (urls) 
        pending = [loop.run_in_executor (None, get, url, self.headers) for url in urls [: concurrency]] 
        rest = urls [concurrency :] 
        while pending : 
            (done, pending) = (yield asyncio.From (asyncio.wait (pending, return_when = asyncio.FIRST_COMPLETED))) 
            while (rest and (len (pending) < concurrency)) : 
                pending.add (loop.run_in_executor (None, get, rest.pop (), self.headers)) 
for future in done : 
                try : 
                    si = future.result () 
except Exception : 
                    logger.info ('failed on url', exc_info = True) 
loop = asyncio.get_event_loop () 
    loop.run_until_complete (run (callback, concurrency = 32, loop = loop)) 

    
    

    Fix the buggy line: loop.run_until_complete (run (callback, concurrency = 32, loop = loop))
assistant
#Here is Python program to fix the buggy line: loop.

loop.run_until_complete (run (urls, concurrency = 32, loop = loop))