[IPython-User] ipython and readline warning
Sat Sep 10 22:37:01 CDT 2011
I did try to use easy_install, but used it after pip. I think since I had
already installed it, easy_install was not installing it again.
I did not easy_install -a readline and this solved my problem.
Thanks for the email!
On Sat, Sep 10, 2011 at 11:32 PM, MinRK <email@example.com> wrote:
> Short answer: use easy_install, not pip, to get readline.
> Long answer:
> tab completion will "work" with libedit, but it will not be well behaved.
> Among the 'not well behaved' aspects of using libedit includes random
> crashes of the interpreter. This is why the warning is so loud.
> The thing to check is the output of:
> python -c "import readline; print readline"
> and in IPython:
> import readline
> print readline._rl
> I expect you will see something like:
> `<module 'readline' from
> which would mean that you are not using your newly installed readline.
> You mentioned on SO that you added the egg-info to sys.path, but when I
> just now installed readline with pip, it put readline.so directly in
> site-packages, not in egg-info, so your path insertion won't help (if you
> insert the site-packages dir itself, it might). This behavior is different
> between pip and easy_install, which puts the file inside the egg, and then
> adds it to the path.
> The OSX path is *weird*. The extra library paths (lib-dynload, plat-mac,
> Extras, etc.) show up after individual packages, but *before* site-packages
> dirs, because site.addsitedir *appends* to sys.path, rather than inserts,
> whereas regular package dirs are *inserted*. That means that a module that
> is in the system lib-dynload has import priority over one in site-packages,
> and even the *user* site-packages.
> On Sat, Sep 10, 2011 at 18:34, Lisa Daniels <firstname.lastname@example.org>wrote:
>> Hi Folks,
>> I got a warning message related to readling when I was trying to run
>> ipython using osx. I created a question here
>> but I thought this would be a more appropriate forum after I spent some more
>> time on this issue.
>> I suspect that this is a fake warning, since I am able to get tab
>> completion to work. I think (but I am not sure) that the issue is related to
>> this : https://github.com/ipython/ipython/pull/525
>> I put some print statements like so:
>> if p is not None and p.returncode == 0 and
>> re.search(r'/libedit[\.\d+]*.dylib\s', out.decode()):
>> #if p is not None and p.returncode == 0 and
>> re.search(r'/libedit[\.\d+]*\.dylib\s', out):
>> # we are bound to libedit - new in Leopard
>> print repr(p)
>> print p.returncode
>> print have_readline
>> print repr(out)
>> and I got the following:
>> $ ipython
>> <subprocess.Popen object at 0x10171e550>
>> (compatibility version 2.0.0, current version
>> 2.11.0)\n\t/usr/lib/libncurses.5.4.dylib (compatibility version 5.4.0,
>> current version 5.4.0)\n\t/usr/lib/libSystem.B.dylib (compatibility version
>> 1.0.0, current version 125.2.1)\n'
>> From this point on, I am a little lost and would appreciate any advice of
>> what I need to do to get rid of this warning.
>> IPython-User mailing list
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