mypyR

ds88bifa@rstudio1:~$ pip install virtualenv
…
  IOError: [Errno 2] No such file or directory: '/tmp/pip-build-mCEsJp/unknown/setup.py'
  
  ----------------------------------------
  Failed building wheel for unknown
  Running setup.py clean for unknown
  Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-mCEsJp/unknown/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" clean --all:
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
  IOError: [Errno 2] No such file or directory: '/tmp/pip-build-mCEsJp/unknown/setup.py'
  
  ----------------------------------------
  Failed cleaning build dir for unknown
Successfully built distlib filelock unknown unknown scandir
Failed to build unknown
Installing collected packages: six, distlib, contextlib2, unknown, scandir, pathlib2, unknown, importlib-metadata, appdirs, singledispatch, typing, importlib-resources, filelock, virtualenv
Successfully installed appdirs contextlib2 distlib filelock importlib-metadata importlib-resources pathlib2 scandir singledispatch six-1.10.0 typing unknown unknown virtualenv-15.0.1
You are using pip version 8.1.1, however version 20.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command
# so virtualenv was installed but this is very old
#
# also
ds88bifa@rstudio1:~$ which virtualenv
/usr/bin/virtualenv
ds88bifa@rstudio1:~$ pip install --upgrade pip
Collecting pip
  Using cached https://files.pythonhosted.org/packages/54/0c/d01aa759fdc501a58f431eb594a17495f15b88da142ce14b5845662c13f3/pip-20.0.2-py2.py3-none-any.whl
Installing collected packages: pip
Successfully installed pip-20.0.2
# but we still need to use the correct pip because
ds88bifa@rstudio1:~$ which pip
/usr/bin/pip
ds88bifa@rstudio1:~$ export PATH=~/.local/bin/:$PATH
ds88bifa@rstudio1:~$ which pip
/homes/ds88bifa/.local/bin//pip
# just to be sure
ds88bifa@rstudio1:~$ pip install virtualenv
…
ds88bifa@rstudio1:~$ virtualenv --version
virtualenv 20.0.15 from /homes/ds88bifa/.local/lib/python2.7/site-packages/virtualenv/__init__.pyc
########
# ok step 2,3,4 from the instructions
ds88bifa@rstudio1:~$ mkdir mypyR
ds88bifa@rstudio1:~$ cd mypyR
ds88bifa@rstudio1:~/mypyR$ virtualenv python
created virtual environment …
ds88bifa@rstudio1:~/mypyR$ source python/bin/activate
(python) ds88bifa@rstudio1:~/mypyR$ 
(python) ds88bifa@rstudio1:~/mypyR$ pip install numpy pandas matplotlib
…
Successfully installed
########
# ok step 5
(python) ds88bifa@rstudio1:~/mypyR$ R
…
> install.packages("reticulate")
…
> quit("no")
(python) ds88bifa@rstudio1:~/mypyR$ echo 'Sys.setenv(RETICULATE_PYTHON = "python/bin/python")' > .Rprofile
(python) ds88bifa@rstudio1:~/mypyR$ R
> reticulate::py_config()
python:         /homes/ds88bifa/mypyR/python/bin/python
libpython:      /usr/lib/python2.7/config-x86_64-linux-gnu/libpython2.7.so
pythonhome:     //usr://usr
virtualenv:     /homes/ds88bifa/mypyR/python/bin/activate_this.py
version:        2.7.12 (default, Oct  8 2019, 14:14:10)  [GCC 5.4.0 20160609]
numpy:          /homes/ds88bifa/mypyR/python/lib/python2.7/site-packages/numpy
numpy_version:  1.16.6

NOTE: Python version was forced by RETICULATE_PYTHON