Does not work under other terminal emulators
It seems to support only python 3.5 as I have this error with python 3.4:
Python 3.4.2 (default, Oct 8 2014, 10:45:20) [GCC 4.9.1] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import matplotlib.pyplot as plt >>> plt.plot([1,2,3]) [<matplotlib.lines.Line2D object at 0x7f3e03775da0>] >>> plt.show() Traceback (most recent call last): File "
", line 1, in File "/usr/local/lib/python3.4/dist-packages/matplotlib/pyplot.py", line 252, in show return _show(args, **kw) File "/usr/local/lib/python3.4/dist-packages/itermplot/init.py", line 103, in show figmanager.show() File "/usr/local/lib/python3.4/dist-packages/itermplot/init.py", line 216, in show imgcat(data.getbuffer()) File "/usr/local/lib/python3.4/dist-packages/itermplot/init.py", line 76, in imgcat buf += linesb'\n' + csi + b'?25l' + csi + b'%dF' % lines + osc TypeError: unsupported operand type(s) for %: 'bytes' and 'int'
Will it work in future?
Could you update itermplot and try now? pip3 install -U itermplot
Ok, now it doesn't raise error, but output very large strange thing:
]1337;File=;size=5205;inline=1;width=auto;height=10;preserveAspectRatio=1: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....
UPD: Probably there is a problem with my environment, as it shows nothing in output window if I clear MPLBACKEND variable.
Ok, I'm trying hard to replicate the problem by installing Python 3.4 but can't seem to get the latest matplotlib working with Py3.4...
Are you running under TMUX or something similar?
Yes, tmux 2.3. But if I try to use it in pure terminal, without itermplot, the problem stays on. Also it represent this issues: https://github.com/matplotlib/matplotlib/issues/2976. So, problem could be in matplotlib. I will try to fix it, and inform you later.
Ok, I fix this problem (just install cairocffi) so it shows me correct plot. But itermplot still shows me bunch of symbols.
Even when you are not running under TMUX?
On Mon, Jan 16, 2017 at 3:24 PM, Ivan Khomutov [email protected] wrote:
Ok, I fix this problem (just install cairocffi) so it shows me correct plot. But itermplot still shows me bunch of symbols.
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Yes. Attached a screenshot for your convenience.

To test, could you run it outside of TMUX?
On Mon, Jan 16, 2017 at 3:38 PM, Ivan Khomutov [email protected] wrote:
Yes. Attached a screenshot for your convenience. [image: screenshot from 2017-01-16 14 36 08] https://cloud.githubusercontent.com/assets/17610400/21971117/32c9861a-dbf9-11e6-934a-d9aa1400e9fb.png
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Same result.

The problem persists with ipython3 (instead of python3).
Ok, I think I see the problem now. Is your terminal iTerm2 running on a Mac? https://www.iterm2.com/
It looks like you are on Linux? Normal terminals don't support inline images...
On Mon, Jan 16, 2017 at 3:44 PM, Ivan Khomutov [email protected] wrote:
Same result. [image: screenshot from 2017-01-16 14 43 35] https://cloud.githubusercontent.com/assets/17610400/21971205/32ccc2ac-dbfa-11e6-866f-c09b7ad217fe.png
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Yes, I'm using debian 8.7. Are there any alternative terminals that will support your module on that os?
Not for the moment, but I am looking into it... See some comments here:
https://www.reddit.com/r/Python/comments/5nojs2/an_awesome_iterm2_backend_for_matplotlib_so_you/dce93ig/
On Mon, Jan 16, 2017 at 3:54 PM, Ivan Khomutov [email protected] wrote:
Yes, I'm using debian 8.7. Are there any alternatives that will support your module on that os?
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Ok, thanks a lot.
this might be a choice: https://github.com/saitoha/PySixel
Have you had a look at hyper? Not sure how active the development is still around it, but it supports image display I believe.
PS: https://github.com/zeit/hyper
Hyper wont support the same protocol. Iterm2 sends these special leet 1337 escape sequences that only it understands. Searching hyper for 1337 shows no results.