Crashes on plt.show()

[fccoelho]

object.Exception@/home/fccoelho/.dub/packages/matplotlib-d-0.1.5/matplotlib-d/source/matplotlibd/core/pycall.d(20):

ERROR occurred in Python:
Traceback (most recent call last):
File "", line 2, in
NameError: name 'inf' is not defined

---

/home/fccoelho/.dub/packages/matplotlib-d-0.1.5/matplotlib-d/source/matplotlibd/core/pycall.d:20 void matplotlibd.core.pycall.call(immutable(char)[]) [0x563d2a7c6c31]
/home/fccoelho/.dub/packages/matplotlib-d-0.1.5/matplotlib-d/source/matplotlibd/pyplot.d-mixin-41:378 void matplotlibd.pyplot.show!().show() [0x563d2a7c517b]

[andre2007]

@fccoelho

• which operation system?
• which python version?
• which matplotlib version?

When you directly write a python script with the mentioned command, does it work or the same error occur?

[fccoelho]

Ubuntu Python 3.6 Matplotlib 3.x(latest from pypi) I use python + matplotlib every day without issues . Em qua, 3 de jul de 2019 16:12, andre2007 <notifications@github.com> escreveu:

…

@fccoelho <https://github.com/fccoelho> - which operation system? - which python version? - which matplotlib version? When you directly write a python script with the mentioned command, does it work or the same error occur? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#14?email_source=notifications&email_token=AABCGWYNBHOJRMH4CMABKBDP5T2YDA5CNFSM4H5IV732YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODZFNOGY#issuecomment-508221211>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AABCGW3IT7UB5EQ4OMOQWGDP5T2YDANCNFSM4H5IV73Q> .

[andre2007]

While this dub library is built, it executes this python script https://github.com/koji-kojiro/matplotlib-d/blob/master/python/prebuild.py. The python script generates this file on your local pc https://github.com/koji-kojiro/matplotlib-d/blob/master/views/pyplot_functions.txt.

The python script was written for python 2 and fails for python 3 (it is already fixed on master but not released to code.dlang.org).

I am also not sure wheter on your system python 2 or python 3 is used to call this script. Is python mapped to 2 or 3 on your system?

[andre2007]

@koji-kojiro could you please create a new release to get the latest changes from master? Maybe it would also be a good idea to add to the python script a log containing the python version and the matplotlib version. This would make error investigation a lot easier.

[fccoelho]

I am also not sure wheter on your system python 2 or python 3 is used to call this script. Is python mapped to 2 or 3 on your system?

Yes, you nailed it. in my system, python points to python2.7 so the shebang line on the prebuild.py module should be `#!/usr/bin/env python3

[andre2007]

I am not a linux/python expert, is python3 always correct or are there systems where python points to version 3 and an executable python3 does not exist?

[fccoelho]

Well, yes you are correct. Changing the shebang line to python3 would fail on some machine where the only python installed is three and referenced simply as `python`. On the other hand, I tried to run my d program from a virtualenv where `python` meant only python 3.6 but I got the same error. I should say that I have matplotlib installed also for python2.7 on my system and I can plot normally from the python2.7 console.

[fccoelho]

Again if we look at the exception thrown by python in this case, is:

Traceback (most recent call last):
File "", line 2, in
NameError: name 'inf' is not defined

So it seems to be related to the code being generated by matplotlib-d which is not defining inf.
logging the full traceback from python would help to debug this issue.

[fccoelho]

Ok, I have found the issue. My problem is that one of the series I am plotting includes an inf value...
That's why the plot is failing. I think it would be a good Idea to convert the data to python compatible types.