I have create this simple env with conda
:
conda create -n test python=3.8.5 pandas scipy numpy matplotlib seaborn jupyterlab
The following code in jupyter lab
crashes the kernel :
import matplotlib.pyplot as plt
plt.subplot()
I don't face the problem on Linux
. The problem is when I try on Windows 10
.
There are no errors on the jupyter lab
console (where I started the server), and I have no idea where to investigate.
CodePudding user response:
Solution
- If this is occurring after updating
conda
orfreetype
- Go to the
Anaconda
prompt and downgradefreetype 2.11.0
in any affected environment.conda install freetype=2.10.4
- Relevant to any package using
matplotlib
- For example,
pandas.DataFrame.plot
andseaborn
- For example,
Discovery
- An issue occurs after updating with the most current updates from
conda
, released Friday, Oct 29. - After updating with
conda update --all
, there's an issue with anything related tomatplotlib
in any IDE (not justJupyter
).- I tested this in
JupyterLab
,PyCharm
, andpython
from the command prompt. - PyCharm:
Process finished with exit code -1073741819
- I tested this in
- The issue seems to be with
conda update --all
in(base)
, then any plot API that usesmatplotlib
(e.g.seaborn
andpandas.DataFrame.plot
) kills the kernel in any environment. - I had to reinstall Anaconda, but do not do a an update of
(base)
, then my other environments worked. - I have not figured out what specifically is causing the issue.
- I tested the issue with
python 3.8.12
andpython 3.9.7
- Current Testing:
- Following is the
conda
revision log. - Prior to
conda update --all
this environment was working, but after the updates, plotting withmatplotlib
crashes the python kernel
- Following is the
2021-10-31 10:47:22 (rev 3)
bokeh {2.3.3 (defaults/win-64) -> 2.4.1 (defaults/win-64)}
click {8.0.1 (defaults/noarch) -> 8.0.3 (defaults/noarch)}
filelock {3.0.12 (defaults/noarch) -> 3.3.1 (defaults/noarch)}
freetype {2.10.4 (defaults/win-64) -> 2.11.0 (defaults/win-64)}
imagecodecs {2021.6.8 (defaults/win-64) -> 2021.8.26 (defaults/win-64)}
joblib {1.0.1 (defaults/noarch) -> 1.1.0 (defaults/noarch)}
lerc {2.2.1 (defaults/win-64) -> 3.0 (defaults/win-64)}
more-itertools {8.8.0 (defaults/noarch) -> 8.10.0 (defaults/noarch)}
pyopenssl {20.0.1 (defaults/noarch) -> 21.0.0 (defaults/noarch)}
scikit-learn {0.24.2 (defaults/win-64) -> 1.0.1 (defaults/win-64)}
statsmodels {0.12.2 (defaults/win-64) -> 0.13.0 (defaults/win-64)}
sympy {1.8 (defaults/win-64) -> 1.9 (defaults/win-64)}
tqdm {4.62.2 (defaults/noarch) -> 4.62.3 (defaults/noarch)}
xlwings {0.24.7 (defaults/win-64) -> 0.24.9 (defaults/win-64)}
- The issue seems to be
freetype
- Downgrading from
2.11.0
to2.10.4
resolved the issue and made the environment work withmatplotlib
- Downgrading from
- Went to post a bug report and discovered there is [Bug]: Matplotlib crashes Python #21511