root@dwhitfield-centos6:/usr/src/Python-3.7.0# python3.7 get-pip.py

Traceback (most recent call last):

  File "get-pip.py", line 20890, in <module>

    main()

  File "get-pip.py", line 197, in main

    bootstrap(tmpdir=tmpdir)

  File "get-pip.py", line 82, in bootstrap

    import pip._internal

  File "/tmp/tmp3i5zf_1_/pip.zip/pip/_internal/__init__.py", line 40, in <module>

  File "/tmp/tmp3i5zf_1_/pip.zip/pip/_internal/cli/autocompletion.py", line 8, in <module>

  File "/tmp/tmp3i5zf_1_/pip.zip/pip/_internal/cli/main_parser.py", line 12, in <module>

  File "/tmp/tmp3i5zf_1_/pip.zip/pip/_internal/commands/__init__.py", line 6, in <module>

  File "/tmp/tmp3i5zf_1_/pip.zip/pip/_internal/commands/completion.py", line 6, in <module>

  File "/tmp/tmp3i5zf_1_/pip.zip/pip/_internal/cli/base_command.py", line 18, in <module>

  File "/tmp/tmp3i5zf_1_/pip.zip/pip/_internal/download.py", line 38, in <module>

  File "/tmp/tmp3i5zf_1_/pip.zip/pip/_internal/utils/glibc.py", line 3, in <module>

  File "/usr/local/lib/python3.7/ctypes/__init__.py", line 7, in <module>

    from _ctypes import Union, Structure, Array

ModuleNotFoundError: No module named '_ctypes'