AttributeError: 'NoneType' object has no attribute 'render'

[ddrous]

Nice work with this library !! The getting started code in the README is not running. Please, can you provide a fix? I have the latest version of Pyvis installed !

from pyvis.network import Network

g = Network()
g.add_node(0)
g.add_node(1)
g.add_edge(0, 1)
g.show("basic.html")

[Apollo-Roboto]

Same issue on my side, I had to downgrade from 0.3.2 to 0.3.1

pip install --upgrade pyvis==0.3.1

[guy4261]

Same here. Downgrading from 0.3.2 → 0.3.1 solved it. Adding my environment + downgrade output to show that none of my other packages changed versions, just pyvis:

> uname -a
Darwin Guys-MacBook-Pro-2.local 22.6.0 Darwin Kernel Version 22.6.0: Wed Jul  5 22:21:56 PDT 2023; root:xnu-8796.141.3~6/RELEASE_X86_64 x86_64

> python -V                                                                                                                                                                                                                                                                                                                                                                                            
Python 3.10.12

> pip install --upgrade pyvis==0.3.1

Collecting pyvis==0.3.1
  Downloading pyvis-0.3.1.tar.gz (748 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 748.9/748.9 kB 2.7 MB/s eta 0:00:00
  Preparing metadata (setup.py) ... done
Requirement already satisfied: jinja2>=2.9.6 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from pyvis==0.3.1) (3.1.2)
Requirement already satisfied: networkx>=1.11 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from pyvis==0.3.1) (3.2.1)
Requirement already satisfied: ipython>=5.3.0 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from pyvis==0.3.1) (8.12.2)
Requirement already satisfied: jsonpickle>=1.4.1 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from pyvis==0.3.1) (3.0.2)
Requirement already satisfied: backcall in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (0.2.0)
Requirement already satisfied: decorator in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (5.1.1)
Requirement already satisfied: jedi>=0.16 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (0.18.2)
Requirement already satisfied: matplotlib-inline in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (0.1.6)
Requirement already satisfied: pickleshare in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (0.7.5)
Requirement already satisfied: prompt-toolkit!=3.0.37,<3.1.0,>=3.0.30 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (3.0.39)
Requirement already satisfied: pygments>=2.4.0 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (2.16.1)
Requirement already satisfied: stack-data in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (0.6.2)
Requirement already satisfied: traitlets>=5 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (5.9.0)
Requirement already satisfied: pexpect>4.3 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (4.8.0)
Requirement already satisfied: appnope in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from ipython>=5.3.0->pyvis==0.3.1) (0.1.3)
Requirement already satisfied: MarkupSafe>=2.0 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from jinja2>=2.9.6->pyvis==0.3.1) (2.1.3)
Requirement already satisfied: parso<0.9.0,>=0.8.0 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from jedi>=0.16->ipython>=5.3.0->pyvis==0.3.1) (0.8.3)
Requirement already satisfied: ptyprocess>=0.5 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from pexpect>4.3->ipython>=5.3.0->pyvis==0.3.1) (0.7.0)
Requirement already satisfied: wcwidth in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from prompt-toolkit!=3.0.37,<3.1.0,>=3.0.30->ipython>=5.3.0->pyvis==0.3.1) (0.2.6)
Requirement already satisfied: executing>=1.2.0 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from stack-data->ipython>=5.3.0->pyvis==0.3.1) (1.2.0)
Requirement already satisfied: asttokens>=2.1.0 in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from stack-data->ipython>=5.3.0->pyvis==0.3.1) (2.2.1)
Requirement already satisfied: pure-eval in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from stack-data->ipython>=5.3.0->pyvis==0.3.1) (0.2.2)
Requirement already satisfied: six in /Users/guyr/miniconda3/envs/sections/lib/python3.10/site-packages (from asttokens>=2.1.0->stack-data->ipython>=5.3.0->pyvis==0.3.1) (1.16.0)

[shenmuxing]

Maybe the error occurred somewhere around here. I handled it by add two lines in example codes:

from pyvis.network import Network

g = Network()
g.add_node(0)
g.add_node(1)
g.add_edge(0, 1)
template = g.templateEnv.get_template(g.path)
g.template = template
g.show("basic.html")

Here I defined template and g.template by hand, and it works.

[shenmuxing]

Oops. I found this issue is help to solve this problem.
And just change the codes as follows:

from pyvis.network import Network

g = Network()
g.add_node(0)
g.add_node(1)
g.add_edge(0, 1)
g.show("basic.html",notebook = False)

add arguement notebook = False just solve this problem.