closing pyplot before draw

[mmatera]

This should fix the overlaid graphs

[rocky]

For me this has no effect in Django - broken either way. I suspect a change needs to be done in Django.

[mmatera]

OK, with this setup:

---

Software Information
Python

Python: 3.11.3 | packaged by conda-forge | (main, Apr 6 2023, 08:57:19) [GCC 11.3.0]
Implementation: CPython 3.11.3.final.0

Mathics3 Software

Mathics3 Django: 7.0.0dev0
Mathics3: 7.0.0dev0

Web Software

Django: 5.0.7
mathics-threejs-backend: 1.3.1
three.js: 146
MathJax: 2.7.9

Numeric Software

mpmath: 1.3.0
Numpy: 1.24.3
Sympy: 1.12

Optional Software

cython: 0.29.34
lxml: 4.9.2
networkx: 3.3
nltk: Not installed
psutil: 5.9.5
skimage: 0.20.0
scipy: 1.14.0
wordcloud: 1.9.2

matplotlib: 3.7.1 -> Something to add to mathics_info

---

there is no superposition with previous graphs.

To continue the research, what is the output of the following command when is run in the terminal?

mathics -e 'LoadModule["pymathics.graph"];' -e 'Graph[{1<->2,3<->4},VertexLabels->True]//TeXForm' -e 'Graph[{2<->3,3<->4},VertexLabels->True]//TeXForm'

Also, how does the generated figures look?

[rocky]

LGTM - this addresses the problem seen in mathics-core PDF generation with 3.9.1.

However for Django, see Mathics3/mathics-django#206