Update 2021-11-06
- The default
pkgs/main channel for conda has reverted to using freetype 2.10.4 for Windows, per main / packages / freetype.
- If you are still experiencing the issue, use
conda list freetype to check the version: freetype != 2.11.0
- If it is
2.11.0, then change the version, per the solution, or conda update --all (providing your default channel isn’t changed in the .condarc config file).
Solution
- If this is occurring after installing Anaconda, updating
conda or freetype since Oct 27, 2021.
- Go to the
Anaconda prompt and downgrade freetype 2.11.0 in any affected environment.
conda install freetype=2.10.4
- Relevant to any package using
matplotlib and any IDE
- For example,
pandas.DataFrame.plot and seaborn
- Jupyter, Spyder, VSCode, PyCharm, command line.
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 to matplotlib in any IDE (not just Jupyter).
- I tested this in
JupyterLab, PyCharm, and python from the command prompt.
- PyCharm:
Process finished with exit code -1073741819
- JupyterLab: kernel just restarts and there are no associated errors or Traceback
- command prompt: a blank interactive matplotlib window will appear briefly, and then a new command line appears.
- The issue seems to be with
conda update --all in (base), then any plot API that uses matplotlib (e.g. seaborn and pandas.DataFrame.plot) kills the kernel in any environment.
- I had to reinstall Anaconda, but do not do 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 and python 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 with matplotlib crashes the python kernel
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 to 2.10.4 resolved the issue and made the environment work with matplotlib
- Went to post a bug report and discovered there is [Bug]: Matplotlib crashes Python #21511