For file operations, Python uses the operating system’s default buffering unless you configure it do otherwise. You can specify a buffer size, unbuffered, or line buffered.
For example, the open function takes a buffer size argument.
http://docs.python.org/library/functions.html#open
“The optional buffering argument specifies the file’s desired buffer size:”
- 0 means unbuffered,
- 1 means line buffered,
- any other positive value means use a buffer of (approximately) that size.
- A negative buffering means to use the system default, which is usually line buffered for tty devices and fully buffered for other files.
- If omitted, the system default is used.
code:
bufsize = 0 f = open('file.txt', 'w', buffering=bufsize)
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