OptunaでModuleNotFoundError: No module named '_yaml' Optuna OptunaQuick Start ModuleNotFoundError: No module named '_yaml' `Lib\site-packages\yaml\cyaml.py`5 from _yaml import CParser, CEmitter Pythonoptunapyyaml **** Python 3.6.1 :: Anaconda 4.4.0 (64-bit) Name: PyYAML Version: 3.12 Summary: YAML parser and emitter for Python Home-page: Author: Kirill Simonov Author-email: xi@resolvent.net License: MIT Location: c:\programdata\anaconda3\envs\chainer5_0_0_py36\lib\site-packages Requires: Required-by: cliff Name: optuna Version: 0.10.0 Summary: UNKNOWN Home-page: Author: Takuya Akiba Author-email: akiba@preferred.jp License: UNKNOWN Location: c:\programdata\anaconda3\envs\chainer5_0_0_py36\lib\site-packages Requires: sqlalchemy, numpy, scipy, six, typing, cliff, colorlog, pandas, alembic Required-by:

Cyaml
PyPIPyYAML 3.12<

AnacondaPyPI `pip`

PythonOptunavirtualenvAnaconda

(Apologies for the use of Google Translate, I studied Japanese for 2 years back in the early 80's but probably cannot even order a beer).


\- [python 3.6]<
\- Python
\- virtualenv: `\path\to\python.exe -m venv %TEMP%\optuna`
\- %TEMP%\optuna\Scripts\activate.bat
\- pip install optuna pyyaml==3.13

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