On 8/17/2011 12:33 PM, Seebs wrote:
On 2011-08-17, peter<peter.mos...@talk21.com> wrote:
Is there an equivalent to msvcrt for Linux users? I haven't found
one, and have resorted to some very clumsy code which turns off
keyboard excho then reads stdin. Seems such an obvious thing to want
to do I am surprised there is not a standard library module for it. Or
have I missed someting (wouldn't be the first time!)
There's no direct equivalent to the whole of msvcrt. The Unixy way to
do stuff like that on the command line is usually curses. But to make
a long story short: Unix evolved in a setting where there was often
not a user at *THE* console, and users were often on devices such that
it made sense to have all the line editing happen on the remote end, with
the remote end sending a completed line once the user was done with all
that stuff like backspaces.
Unix programs that do stuff like this for tty input do exist, of course,
but for the most part, they use an entire API designed for creating such
utilities, rather than one or two specialized functions. (Another part
of the reason for this: The Unix solution scales nicely to the case where
the five people using your program will be doing so on physically
different hardware terminals which don't use the same escape sequences
for cursor movement.)
The difference is between "Hit <enter> to continue" (which we can do in
portable Python) versus "Hit any key to continue" (which we cannot, and
which also leads to the joke about people searching for the 'any' key
;-). The equivalent contrast for GUIs is "Click OK to continue" versus
"Click anywhere to continue" If having to click a specific area is okay
for GUIs, having to hit a specific key for TUIs should be also.
--
Terry Jan Reedy
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