How to solve this error while installing python packages in RStudio? - r

Question

I gave the following command
library(reticulate)
py_install("pandas")
I am getting an error while installing python packages in RStudio :
Solving environment: ...working... failed
CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://repo.anaconda.com/pkgs/main/noarch/repodata.json.bz2>
Elapsed: -
An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simple retry will get you on your way.
If your current network has https://www.anaconda.com blocked, please file
a support request with your network engineering team.
SSLError(MaxRetryError('HTTPSConnectionPool(host=\'repo.anaconda.com\', port=443): Max retries exceeded with url: /pkgs/main/noarch/repodata.json.bz2 (Caused by SSLError("Can\'t connect to HTTPS URL because the SSL module is not available."))'))
Error: Error 1 occurred creating conda environment r-reticulate
Please help in resolving this error.

Answer 1

Solved a similar error arising from install_tensorflow():
SSLError("Can't connect to HTTPS URL because the SSL module is not available."))'))
by adding the path of the openssl.exe to the %PATH% environment variable of Windows. In my pc, the path is like this (replace "[username]" by yours):
C:\Users\[username]\Anaconda3\pkgs\openssl-1.1.1b-he774522_1\Library\bin
If somehow your openssl is an old version (as discussed here: https://github.com/conda/conda/issues/8046), you can install an up-to-date version following the guides below:
https://jchornsey.wordpress.com/2015/03/17/installing-openssl-in-windows-8-1/
https://www.cloudinsidr.com/content/how-to-install-the-most-recent-version-of-openssl-on-windows-10-in-64-bit/
As these guides explain, "the official OpenSSL website offers Linux sources only." For Windows binaries, you can obtain from https://slproweb.com/products/Win32OpenSSL.html provided by Shining Light Productions. The github issue discussion mentions that this link is listed on the OpenSSL wiki (https://wiki.openssl.org/index.php/Binaries -- I went there two days ago to confirm but today that page does not load, perhaps due to the Easter holidays).
The guides also explain that "If you’re not developing software, you don’t need the full versions; the “Light” version is intended for end-users.

Answer 2

Installing Python from RStudio seems interesting. One way to go is use reticulatepackage in R which provides R interface to Python and use Python within R.
Python packages are generally installed either using pip or 'conda' if anaconda is being used.
Then to use it in R, mention the proper path where python is installed in the system.
library(reticulate)
use_python("/usr/local/bin/python")
Reticulate also provides a way to install package using py_install() function.
library(reticulate)
py_install("pandas")
Please look for more details about reticulatepackage here and about installing packages here.