pyenv 安装 python3.7.*失败 No module

今天在查看python文档中关于 calendar 模块的内容时，发现 3.7 版本增加了一些内容，故想使用 pyenv 安装。

环境：

• centos 7

# pyenv install --list
# pyenv install 3.7.3

出现以下错误：

WARNING: Please make sure you remove any previous custom paths from your /root/.pydistutils.cfg file.
Downloading Python-3.7.3.tar.xz...
-> https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tar.xz
Installing Python-3.7.3...

BUILD FAILED (CentOS 7.3.1611 using python-build 1.2.4-118-g7dd5014)

Inspect or clean up the working tree at /tmp/python-build.20190604173429.12378
Results logged to /tmp/python-build.20190604173429.12378.log

Last 10 log lines:
  File "/tmp/tmppvjv01x9/pip-19.0.3-py2.py3-none-any.whl/pip/_internal/cli/main_parser.py", line 12, in <module>
  File "/tmp/tmppvjv01x9/pip-19.0.3-py2.py3-none-any.whl/pip/_internal/commands/__init__.py", line 6, in <module>
  File "/tmp/tmppvjv01x9/pip-19.0.3-py2.py3-none-any.whl/pip/_internal/commands/completion.py", line 6, in <module>
  File "/tmp/tmppvjv01x9/pip-19.0.3-py2.py3-none-any.whl/pip/_internal/cli/base_command.py", line 20, in <module>
  File "/tmp/tmppvjv01x9/pip-19.0.3-py2.py3-none-any.whl/pip/_internal/download.py", line 37, in <module>
  File "/tmp/tmppvjv01x9/pip-19.0.3-py2.py3-none-any.whl/pip/_internal/utils/glibc.py", line 3, in <module>
  File "/tmp/python-build.20190604173429.12378/Python-3.7.3/Lib/ctypes/__init__.py", line 7, in <module>
    from _ctypes import Union, Structure, Array
ModuleNotFoundError: No module named '_ctypes'
make: *** [install] Error 1

问过度娘，解决方案如下：

# yum install libffi-devel -y
.
.
.
Installed:
  libffi-devel.x86_64 0:3.0.13-18.el7                                                                                                                                 

Complete!

完成 libffi-devel的安装后，重新运行上面的命令即可。