python - (Pycharm mac os x) can't flush to file -

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i want write file in real time(instead of waiting code finish) flushing, doesn't seem change anything. here's code:

 datafile =open("json",'a+')   def write(data):         datafile.write(data)         datafile.flush()

also datafile.close() didn't change anything. know problem is?

edit: managed make work adding os.fsync(datafile.fileno()) right after datafile.flush()

you must use standard python library json https://docs.python.org/3.3/library/json.html

i think use of open file inside function global name not correct.


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