[Python-Dev] Incorrect documentation of the raw_input built-in function (original) (raw)

Guido van Rossum guido at python.org
Thu Jan 24 19:47:46 CET 2008

Beware: this may depend on whether GNU readline is enabled or not -- under many circumstances, raw_input() calls GNU readline instead of using sys.stdin/stdout.

I do agree that if there are any conditions where it uses stderr instead of stdout those are mistakes.

On Jan 24, 2008 9:47 AM, <skip at pobox.com> wrote:

Isaac> Have people actually verified that the prompt is really sent to Isaac> stderr right now by using 2>/dev/null to attempt to suppress it? Good point. On my machine at work (Solaris), Python 2.4 seems to send its rawinput prompt to stdout, not stderr: % python Python 2.4.2 (#1, Feb 23 2006, 12:48:31) [GCC 3.4.1] on sunos5 Type "help", "copyright", "credits" or "license" for more information. >>> rawinput("?") ?z 'z' >>> ink% python 2>/dev/null >>> rawinput("?") ?sdf 'sdf' >>> ink% python >/dev/null Python 2.4.2 (#1, Feb 23 2006, 12:48:31) [GCC 3.4.1] on sunos5 Type "help", "copyright", "credits" or "license" for more information. >>> rawinput("?") wer >>> ^D Same for 2.6a0 on my Mac at home. Mike, are you sure about it prompting to stderr? If so, what's your setup? Skip

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