flush

Do I need to os.fsync() before f.close()?

Do I need to os.fsync() before f.close()? Question: "what exactly the python’s file.flush() is doing?" says you should first f.flush() and then os.fsync(f.fileno()) to make sure the data are written to the disk. Furthermore, "does close() imply flush() in Python?" claims that f.close() implies a flush(). Now, the question is: should I do os.fsync(f.fileno()) f.close() …

Total answers: 2

Does `print()` delay in some consoles where `stdout.flush` doesn't?

Does `print()` delay in some consoles where `stdout.flush` doesn't? Question: I’m working on an open source python library that uses a verbose_print command to log outputs in the console. Currently it looks like this: def sys_write_flush(s): """ Writes and flushes without delay a text in the console """ sys.stdout.write(s) sys.stdout.flush() def verbose_print(verbose, s): """ Only …

Total answers: 1

How to prevent BrokenPipeError when doing a flush in Python?

How to prevent BrokenPipeError when doing a flush in Python? Question: Question: Is there a way to use flush=True for the print() function without getting the BrokenPipeError? I have a script pipe.py: for i in range(4000): print(i) I call it like this from a Unix command line: python3 pipe.py | head -n3000 And it returns: …

Total answers: 8

Does python logging flush every log?

Does python logging flush every log? Question: When I write a log to file using the standard module logging, will each log be flushed to disk separately? For example, will the following code flush log by 10 times? logging.basicConfig(level=logging.DEBUG, filename=’debug.log’) for i in xrange(10): logging.debug(“test”) if so, will it slow down ? Asked By: Vincent …

Total answers: 2

How often does python flush to a file?

How often does python flush to a file? Question: How often does Python flush to a file? How often does Python flush to stdout? I’m unsure about (1). As for (2), I believe Python flushes to stdout after every new line. But, if you overload stdout to be to a file, does it flush as …

Total answers: 5

does close() imply flush() in Python?

does close() imply flush() in Python? Question: In Python, and in general – does a close() operation on a file object imply a flush() operation? Asked By: Adam Matan || Source Answers: Yes. It uses the underlying close() function which does that for you (source). Answered By: Martin Wickman NB: close() and flush() won’t ensure …

Total answers: 5

How can I flush the output of the print function?

How can I flush the output of the print function? Question: How do I force Python’s print function to flush the buffered output to the screen? See also: Disable output buffering if the goal is to change the buffering behaviour generally. This question is about explicitly flushing output after a specific print call, even though …

Total answers: 13