在 Jupyter Lab 单元格中显示 Pyvis HTML 时出错
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【中文标题】在 Jupyter Lab 单元格中显示 Pyvis HTML 时出错【英文标题】：Error displaying Pyvis HTML inside Jupyter Lab cell 【发布时间】：2021-04-10 09:04:39 【问题描述】：我正在使用 Pyvis 库通过 html 格式在 Jupyter Lab 内（在单元格中）生成和显示网络。我已经设法创建文件并在外部打开它（使用 Pyvis save_graph 函数）。但是，当使用 Pyvis 的 net.Network(notebook=True) 选项时，Jupyter 输出：
404：未找到。 您请求的页面不存在！
当终端（从我启动 Jupyter 的地方）输出时：
404 GET /files/Documents/(Git)%20Projects/SimSalar/Jupyter%20Notebooks/TRIAL2.html?_xsrf=2%7C9665d25e%7Cbc3fea246105c6b3a9d39f6bbb10d512%7C1607563598&1609770942196 (::1 8888/lab/tree/Documents/(Git)%20Projects/SimSalar/Jupyter%20Notebooks/Workshop%20Analysis.ipynb
从 Pyvis 文档中获取此错误的代码非常简单：
import networkx as nx
from pyvis import network as net
g = net.Network(notebook=True)
nxg = nx.complete_graph(5)
g.from_nx(nxg)
g.show('TRIAL2.html')
澄清一下，HTML 文件的创建没有任何问题（因此可以在外部打开），问题在于在 JupyterLab 中显示此文件（在单元格中）。我已经多次重新安装 Jupyter，并使用了多个版本的 Jupyter Lab（现在是 2.4；2.6；和 3.0）。我离开了完整的 conda 环境规范。我还使用 OS 模块为 g.show('TRIAL2.html') 函数提供了不同的路径。但是还是不行。
# Name Version Build Channel
anyio 2.0.2 py39h6e9494a_3 conda-forge
appnope 0.1.2 py39h6e9494a_0 conda-forge
argon2-cffi 20.1.0 py39h5a22ff9_2 conda-forge
async_generator 1.10 py_0 conda-forge
attrs 20.3.0 pyhd3deb0d_0 conda-forge
babel 2.9.0 pyhd3deb0d_0 conda-forge
backcall 0.2.0 pyh9f0ad1d_0 conda-forge
backports 1.0 py_2 conda-forge
backports.functools_lru_cache 1.6.1 py_0 conda-forge
bleach 3.2.1 pyh9f0ad1d_0 conda-forge
brotlipy 0.7.0 py39h66d5b7b_1001 conda-forge
ca-certificates 2020.12.8 hecd8cb5_0
certifi 2020.12.5 py39h6e9494a_0 conda-forge
cffi 1.14.4 py39h7786acb_1 conda-forge
chardet 4.0.0 py39h6e9494a_0 conda-forge
cryptography 3.3.1 py39h79a2c39_0 conda-forge
cycler 0.10.0 py_2 conda-forge
decorator 4.4.2 py_0 conda-forge
defusedxml 0.6.0 py_0 conda-forge
entrypoints 0.3 pyhd8ed1ab_1003 conda-forge
freetype 2.10.4 h3f75d11_0 conda-forge
icu 68.1 h74dc148_0 conda-forge
idna 2.10 pyh9f0ad1d_0 conda-forge
importlib-metadata 3.3.0 py39h6e9494a_2 conda-forge
importlib_metadata 3.3.0 hd8ed1ab_2 conda-forge
ipykernel 5.4.2 py39h71a6800_0 conda-forge
ipython 7.19.0 py39h71a6800_0 conda-forge
ipython_genutils 0.2.0 py_1 conda-forge
ipywidgets 7.6.2 pyhd3deb0d_0 conda-forge
jedi 0.18.0 py39h6e9494a_1 conda-forge
jinja2 2.11.2 pyh9f0ad1d_0 conda-forge
jpeg 9d hbcb3906_0 conda-forge
json5 0.9.5 pyh9f0ad1d_0 conda-forge
jsonpickle 1.4.2 pyhd3eb1b0_0
jsonschema 3.2.0 py_2 conda-forge
jupyter_client 6.1.7 py_0 conda-forge
jupyter_core 4.7.0 py39h6e9494a_0 conda-forge
jupyter_server 1.1.3 py39h6e9494a_0 conda-forge
jupyterlab 3.0.0 pyhd8ed1ab_0 conda-forge
jupyterlab_pygments 0.1.2 pyh9f0ad1d_0 conda-forge
jupyterlab_server 2.0.0 pyhd8ed1ab_0 conda-forge
jupyterlab_widgets 1.0.0 pyhd8ed1ab_1 conda-forge
kiwisolver 1.3.1 py39heea7e63_0 conda-forge
lcms2 2.11 h11f7e16_1 conda-forge
libblas 3.9.0 6_openblas conda-forge
libcblas 3.9.0 6_openblas conda-forge
libcxx 11.0.0 h4c3b8ed_1 conda-forge
libffi 3.3 h046ec9c_2 conda-forge
libgfortran 5.0.0 h6c81a4c_15 conda-forge
libgfortran5 9.3.0 h6c81a4c_15 conda-forge
liblapack 3.9.0 6_openblas conda-forge
libopenblas 0.3.12 openmp_h54245bb_1 conda-forge
libpng 1.6.37 h7cec526_2 conda-forge
libsodium 1.0.18 hbcb3906_1 conda-forge
libtiff 4.2.0 h355d032_0 conda-forge
libuv 1.40.0 h35c211d_0 conda-forge
libwebp-base 1.1.0 hbcb3906_3 conda-forge
llvm-openmp 11.0.0 h73239a0_1 conda-forge
lz4-c 1.9.3 h046ec9c_0 conda-forge
markupsafe 1.1.1 py39h66d5b7b_2 conda-forge
matplotlib 3.3.3 py39h6e9494a_0 conda-forge
matplotlib-base 3.3.3 py39h5674cf4_0 conda-forge
mistune 0.8.4 py39h5a22ff9_1002 conda-forge
nbclassic 0.2.5 pyhd8ed1ab_0 conda-forge
nbclient 0.5.1 py_0 conda-forge
nbconvert 6.0.7 py39h6e9494a_3 conda-forge
nbformat 5.0.8 py_0 conda-forge
ncurses 6.2 h2e338ed_4 conda-forge
nest-asyncio 1.4.3 pyhd8ed1ab_0 conda-forge
networkx 2.5 py_0 conda-forge
nodejs 15.3.0 heaeed3d_0 conda-forge
notebook 6.1.6 py39h6e9494a_0 conda-forge
numpy 1.19.4 py39he588a01_2 conda-forge
olefile 0.46 pyh9f0ad1d_1 conda-forge
openssl 1.1.1i h35c211d_0 conda-forge
packaging 20.8 pyhd3deb0d_0 conda-forge
pandas 1.2.0 py39h089d6f7_0 conda-forge
pandoc 2.11.3.2 h35c211d_0 conda-forge
pandocfilters 1.4.3 py39hecd8cb5_1
parso 0.8.1 pyhd8ed1ab_0 conda-forge
patsy 0.5.1 py_0 conda-forge
pexpect 4.8.0 pyh9f0ad1d_2 conda-forge
pickleshare 0.7.5 py_1003 conda-forge
pillow 8.1.0 py39hc06e9b5_0 conda-forge
pip 20.3.3 pyhd8ed1ab_0 conda-forge
plotly 4.14.1 pyhd3deb0d_0 conda-forge
prometheus_client 0.9.0 pyhd3deb0d_0 conda-forge
prompt-toolkit 3.0.8 pyha770c72_0 conda-forge
ptyprocess 0.7.0 pyhd3deb0d_0 conda-forge
pycparser 2.20 pyh9f0ad1d_2 conda-forge
pygments 2.7.3 pyhd8ed1ab_0 conda-forge
pyopenssl 20.0.1 pyhd8ed1ab_0 conda-forge
pyparsing 2.4.7 pyh9f0ad1d_0 conda-forge
pyrsistent 0.17.3 py39h5a22ff9_1 conda-forge
pysocks 1.7.1 py39h2c36a5b_2 conda-forge
python 3.9.1 h1d169a7_2_cpython conda-forge
python-dateutil 2.8.1 py_0 conda-forge
python_abi 3.9 1_cp39 conda-forge
pytz 2020.5 pyhd8ed1ab_0 conda-forge
pyvis 0.1.8.2 pyh9f0ad1d_0 conda-forge
pyzmq 20.0.0 py39h07c395c_1 conda-forge
readline 8.0 h0678c8f_2 conda-forge
requests 2.25.1 pyhd3deb0d_0 conda-forge
retrying 1.3.3 py_2 conda-forge
scipy 1.6.0 py39hca3e1c3_0 conda-forge
seaborn 0.11.1 h694c41f_0 conda-forge
seaborn-base 0.11.1 pyhd8ed1ab_0 conda-forge
send2trash 1.5.0 py_0 conda-forge
setuptools 51.0.0 py39hecd8cb5_2
six 1.15.0 pyh9f0ad1d_0 conda-forge
sniffio 1.2.0 py39h6e9494a_0 conda-forge
sqlite 3.34.0 h17101e1_0 conda-forge
statsmodels 0.12.1 py39hf24ec92_1 conda-forge
terminado 0.9.1 py39h6e9494a_1 conda-forge
testpath 0.4.4 py_0 conda-forge
tk 8.6.10 h0419947_1 conda-forge
tornado 6.1 py39h5a22ff9_0 conda-forge
traitlets 5.0.5 py_0 conda-forge
tzdata 2020f he74cb21_0 conda-forge
urllib3 1.26.2 pyhd8ed1ab_0 conda-forge
wcwidth 0.2.5 pyh9f0ad1d_2 conda-forge
webencodings 0.5.1 py_1 conda-forge
wheel 0.36.2 pyhd3deb0d_0 conda-forge
widgetsnbextension 3.5.1 py39h6e9494a_4 conda-forge
xz 5.2.5 haf1e3a3_1 conda-forge
zeromq 4.3.3 h74dc148_3 conda-forge
zipp 3.4.0 py_0 conda-forge
zlib 1.2.11 h7795811_1010 conda-forge
zstd 1.4.8 hf387650_1 conda-forge
非常感谢任何帮助/想法！ *** ticket: I am trying to open an HTML file using python - pyviz
【问题讨论】：
【参考方案1】：更新： 原来 Pyvis（和 IFrame）需要 HTML 文件和 Jupyter Notebook 在同一个文件夹中才能正确显示（否则笔记本会抛出 404 错误）。因此，只需将 HTML 与 notebook 放在同一个工作目录中，一切顺利。
【讨论】：
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