UbuntsuでのPython3のインストール方法

Question

Windows10でもUbuntsuが使えるときいたのでやってみたのですが､入ってるのがPython2.7だったので最新バージョンを入れようとしたので失敗してしまいます｡
以下が私が試した手順です｡

Windows10でPython3.7.2をインストール｡
Microsoft StoreからUbuntsuをインストール｡
Ubuntsuを起動して以下を実行｡
sudo apt-get install git
sudo apt-get install build-essential libncursesw5-dev libgdbm-dev libc6-dev zlib1g-dev libsqlite3-dev tk-dev libssl-dev openssl libbz2-dev libreadline-dev
git clone https://github.com/yyuu/pyenv.git ~/.pyenv
echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.profile
echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.profile
echo 'eval "$(pyenv init -)"' >> ~/.profile
source ~/.profile
pyenv install 3.7.2

すると以下のエラーが表示されてしまいます｡
BUILD FAILED (Ubuntu 18.04 using python-build 1.2.9-6-gddb335c1)

Inspect or clean up the working tree at /tmp/python-build.20190217230302.18791
Results logged to /tmp/python-build.20190217230302.18791.log

Last 10 log lines:
File "/tmp/tmpbeywvnfi/pip-18.1-py2.py3-none-any.whl/pip/_internal/commands/init.py", line 6, in <module>
File "/tmp/tmpbeywvnfi/pip-18.1-py2.py3-none-any.whl/pip/_internal/commands/completion.py", line 6, in <module>
File "/tmp/tmpbeywvnfi/pip-18.1-py2.py3-none-any.whl/pip/_internal/cli/base_command.py", line 18, in <module>
File "/tmp/tmpbeywvnfi/pip-18.1-py2.py3-none-any.whl/pip/_internal/download.py", line 38, in <module>
File "/tmp/tmpbeywvnfi/pip-18.1-py2.py3-none-any.whl/pip/_internal/utils/glibc.py", line 3, in <module>
File "/tmp/python-build.20190217230302.18791/Python-3.7.2/Lib/ctypes/init.py", line 7, in <module>
from _ctypes import Union, Structure, Array
ModuleNotFoundError: No module named '_ctypes'
Makefile:1130: recipe for target 'install' failed
make: *** [install] Error 1

すみません､どのようにすればよいか､ご存知の方教えてください｡

Comments

[stdio]

Results logged to /tmp/python-build.20190217230302.18791.log
と書かれています。ログの中身を確認してください。

[Stan_Dma]

https://github.com/pyenv/pyenv/issues/1183 is your case.

[退会済みユーザー]

Thank you guys!
The last sentences in the log was,
-------------
from _ctypes import Union, Structure, Array
ModuleNotFoundError: No module named '_ctypes'
Makefile:1130: recipe for target 'install' failed
make: *** [install] Error 1
----------
Then I hit
$ sudo apt-get install libffi-dev
-> success!
$ pyenv install 3.7.2
-> pyenv: /home/****/.pyenv/versions/3.7.2 already exists
$ python -v
-> still Python2.7
$ pyenv global 3.7.2
$ python -v
-> still the default is Python2.7

What should I do?

[退会済みユーザー]

$ pyenv global
-> 3.7.2

[退会済みユーザー]

$ pyenv local 3.7.2
$ pyenv global system 3.7.2
$ python --version
-> Python 2.7.15rc1

[Stan_Dma]

I am afraid you should close this question when you have solved the problem that you could not install a specific version of Python. New questions should be asked on each post.

[退会済みユーザー]

Thanks! I will close this question

Answer 1

$ sudo apt-get install libffi-dev
$ pyenv install 3.7.2