Exception in callback BaseAsyncIOLoop._handle_events(12, 1)
handle: <Handle BaseAsyncIOLoop._handle_events(12, 1)>
Traceback (most recent call last):
File "/usr/local/anaconda3_5.2.0/lib/python3.6/asyncio/events.py", line 145, in _run
self._callback(*self._args)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/tornado/platform/asyncio.py", line 117, in _handle_events
handler_func(fileobj, events)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/tornado/stack_context.py", line 276, in null_wrapper
return fn(*args, **kwargs)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/zmq/eventloop/zmqstream.py", line 450, in _handle_events
self._handle_recv()
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/zmq/eventloop/zmqstream.py", line 480, in _handle_recv
self._run_callback(callback, msg)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/zmq/eventloop/zmqstream.py", line 432, in _run_callback
callback(*args, **kwargs)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/tornado/stack_context.py", line 276, in null_wrapper
return fn(*args, **kwargs)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/ipykernel/kernelbase.py", line 283, in dispatcher
return self.dispatch_shell(stream, msg)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/ipykernel/kernelbase.py", line 239, in dispatch_shell
sys.stdout.flush()
ValueError: I/O operation on closed file.
import sys
sys.stdout=open('log.txt', 'w')
print(1)
print(2)
Çغ¸´Ï±î ÀÛµ¿Àº Á¦´ë·Î Çϴ°Š°°Àºµ¥ ¿¡·¯ ¸Þ¼¼Áöµµ ¶ß´Â...
Exception in callback BaseAsyncIOLoop._handle_events(12, 1)
handle: <Handle BaseAsyncIOLoop._handle_events(12, 1)>
Traceback (most recent call last):
File "/usr/local/anaconda3_5.2.0/lib/python3.6/asyncio/events.py", line 145, in _run
self._callback(*self._args)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/tornado/platform/asyncio.py", line 117, in _handle_events
handler_func(fileobj, events)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/tornado/stack_context.py", line 276, in null_wrapper
return fn(*args, **kwargs)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/zmq/eventloop/zmqstream.py", line 450, in _handle_events
self._handle_recv()
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/zmq/eventloop/zmqstream.py", line 480, in _handle_recv
self._run_callback(callback, msg)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/zmq/eventloop/zmqstream.py", line 432, in _run_callback
callback(*args, **kwargs)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/tornado/stack_context.py", line 276, in null_wrapper
return fn(*args, **kwargs)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/ipykernel/kernelbase.py", line 283, in dispatcher
return self.dispatch_shell(stream, msg)
File "/usr/local/anaconda3_5.2.0/lib/python3.6/site-packages/ipykernel/kernelbase.py", line 239, in dispatch_shell
sys.stdout.flush()
ValueError: I/O operation on closed file.
sys.stdout=open('log.txt', 'w')
sys.stdout.close()
print(1)
print(2)
sys.stdout.close() ¸¦ È£ÃâÇÏ¸é ±× ÀÌÈÄ¿¡ sys.stdout¿¡ ´ëÇÑ Àбâ/¾²±â ÀÛ¾÷Àº,
¸»¾¸ÇϽŠValueError: I/O operation on closed file °¡ ¹ß»ýÇÕ´Ï´Ù.
Á¦°¡ ¾ð±ÞÇÑ ³»¿ëÀº ´Ü¼øÈ÷ µ¿ÀÛ ¹æ½ÄÀ» º¸¿©ÁÖ±â À§ÇÑ °ÍÀÏ»Ó,
¾Æ·¡ timeleaf ´ÔÀÇ ¸»¾¸´ë·Î logging ¸ðµâÀ» »ç¿ëÇÏ´Â°Ô ´õ ÁÁÀº ¹æ¹ýÀÔ´Ï´Ù.
import sys
temp = sys.stdout <---
sys.stdout = open("log.dat", "w")
print("test1234")
print("t1111234")
print("zlvxxjv393")
sys.stdout.close()
sys.stdout = temp <--- À̰Ÿ¦ ÇØÁÖ¸é µÈ´Ù°í https://code.i-harness.com/ko-kr/q/31ccb8 ¿©±â º¸°í µû¶óÇغýÀ´Ï´Ù.
=====================
with openÀ» ¾µ ¶§µµ ¾Æ·¡Ã³·³ Çϴϱî Àߵdz׿ä~
temp = sys.stdout <---
with open("log.dat", "w") as sys.stdout:
print("test1234")
print("t1111234")
print("zlvxxjv393")
sys.stdout = temp <---
±×¸®°í loggingµµ Çѹø ºÃ´Âµ¥, ¾ÆÁ÷ Ãʺ¸¶ó ¹«¼¿ö º¸¿©¼ õõÈ÷ º¸·Á°í ÇÕ´Ï´Ù
fp1=open('log1.txt', 'w')
fp2=open('log2.txt', 'w')
print(1, file=fp1)
print(2, file=fp2)
python ½ºÅ©¸³Æ®¸í.py > log.txt
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±×·±µ¥ Àú ÇÔ¼ö¸íÀ» °¡Á®´Ù°¡ ¾µ ¼ö´Â ¾ø³ª¿ä?
ȸ鿡 Ãâ·Âµµ µÇ¸é¼, ÀúÀåµµ µ¿½Ã¿¡ µÇ°Ô ÇÏ°í½Í°Åµç¿ä~
print ´ë½Å¿¡ logging.info »ç¿ëÇÏ°í¿ä
https://docs.python.org/ko/3/howto/logging.html
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