Finding out why a regular expression does not match a given string can
very tedious. I would like to write a utility that identifies the
sub-expression causing the non-match. My idea is to use a parser to
create a tree representing the complete regular expression. Then I could
simplify the expressi
Hello,
I have written a small utility to locate errors in regular expressions
that I want to upload to PyPI. Before I do that, I would like to learn
a litte more about the legal aspects of open-source software. What would
be a good introductory reading?
Plus, I have one very specific question: I
I have asked the PSF for help regarding the implications of the license
status of code from sre_parse.py and the missing license statement in
sre.py. I'll happily report their answer to the list I they don't reply
in this thread.
At least partially, my confusion seems to be caused by the dichotom
Am 10.06.2013 07:31, schrieb Steven D'Aprano:
>
> But bringing it back to the original topic, I believe that the philosophy
> of FOSS is that we should try our best to honour the intentions of the
> writer, not to find some legal loophole that permits us to copy his or
> her work against their
Hi,
I have a Python application that communicates with a server via telnet.
Host and port of the server are supplied by the user when the
application is started.
How can I determine from within the application whether the server's
host actually is the local host? (In that case I could implement a
Am 26.11.2013 00:07, schrieb Chris Angelico:
>
> Two easy ways you could do this. I would be inclined to do what
> PostgreSQL and others do, and have an explicit indication that you
> want to use a local method: for instance, the name "localhost". Use of
> anything else (including "127.0.0.1") mea
Am 26.11.2013 00:41, schrieb Ben Finney:
>
> On Unix, this is up to the person invoking the program: the “sockets
> facility allows for a host-local connection to appear as though it's
> going over a network.
>
> https://en.wikipedia.org/wiki/Localhost>
> https://en.wikipedia.org/wiki/Un
Am 26.11.2013 12:38, schrieb Chris Angelico:
> There is another way you might be able to do this. The server could
> simply create a cookie in the file system - say, a file in /tmp with a
> randomly-generated name - and it can announce that to the client. If
> the client sees the same file in what
Am 26.11.2013 13:26, schrieb Chris Angelico:
> If you deliberately create a file with a random name, the chances of
> one existing with the same name on the client are infinitesimal unless
> someone's deliberately trying to confuse things... in which case I
> wouldn't worry about it.
>
I wouldn't,
Am 27.11.2013 00:37, schrieb Gregory Ewing:
>
> What would happen if you tried the file-based method when
> it wasn't a local connection? Is there a danger of it
> "succeeding" on the wrong machine and damaging something?
>
I have been thinking about that.
There is a slight risk that the client m
Am 27.11.2013 01:14, schrieb Michael Torrie:
>
> I believe socket.getsockname() can return the IP address of the
> connecting client if you're using standard tcp/ip sockets.
>
The way you describe it, it sounds like it would require a change to the
server. I can only modify the client. I'll try t
Am 27.11.2013 00:15, schrieb Chris Angelico:
> Since the server runs Linux, inability to run /sbin/ifconfig could
> safely be interpreted as "we're not running on the server". But I
> think this actually gains little over "is there a file called
> /tmp/_this_is_malte_forkel_on_his_server_9515343_",
I would like to use Python on a router, an Edimax BR-6104K, running OpenWrt
(http://www.openwrt.org). While I probably won't need most of the fancier stuff
in Python, serial I/O and threads should be supported.
The router is based on the ADM5120P, has 2MB of flash and 16MB of RAM, so the
versi
Hello,
I have written a Python package to read from and write to a serial
device that uses short telegrams to communicate with sensors and
actuators. My classes include one to model the transceiver (it
establishes the serial connection using
serial.aio.create_serial_connection) and one for the tel
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