Installation Error

[zzj0402]

Output

    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-OSBzO1/numpy/setup.py", line 31, in <module>
        raise RuntimeError("Python version >= 3.5 required.")
    RuntimeError: Python version >= 3.5 required.

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-OSBzO1/numpy/

System Info

Ubuntu 16.04.6 LTS (GNU/Linux 4.4.0-165-generic x86_64)