Installing Keras/Tensor Flow on R - r

Question

I am trying to install tensorflow on R. As far as I understand I have already installed successlly many times but it won't load
Everytime I run a function from Tensorflow and Keras it does not work.
> testlabels=to_categorical(trainy)
Error: Python module tensorflow.python.keras was not found.
Detected Python configuration:
python: C:\Users\AUSTER~1\ANACON~1\python.exe
libpython: C:/Users/AUSTER~1/ANACON~1/python37.dll
pythonhome: C:\Users\AUSTER~1\ANACON~1
version: 3.7.3 (default, Apr 24 2019, 15:29:51) [MSC v.1915 64 bit (AMD64)]
Architecture: 64bit
numpy: C:\Users\AUSTER~1\ANACON~1\lib\site-packages\numpy
numpy_version: 1.16.4
tensorflow: [NOT FOUND]
When I load the libraries I have no issues. They all load up sucessfully.
library(EBImage)
library(keras)
library(tensorflow)
I have ran all these following commands.
install.packages("keras")
source("http://bioconductor.org/biocLite.R")
biocLite("EBImage")
install.packages("reticulate")
install.packages("remotes")
remotes::install_github("rstudio/tensorflow")
reticulate::py_discover_config("keras")
reticulate::py_discover_config("tensorflow")
install.packages("devtools")
devtools::install_github("rstudio/keras")
tensorflow::install_tensorflow()
devtools::install_github("rstudio/keras")
What could be causing the issue. After I installed tensforflow it said "Installation Complete" and then restarted R. Is R simply unable to find the installation?
I have also ran the following commands still with no luck.
library(tensorflow)
Sys.setenv(TENSORFLOW_PYTHON="/usr/local/bin/python")
Update
I was able to get Tensorflow/Keras to work by opening an Anaconda command prompt and running the following commands. Then my R code using Keras/Tensorflow started to work.
conda install -c conda-forge keras

Answer 1

The keras package makes use of keras through python. When you install the package, it installs the R interface, but not the python package. You must separately install the python package. There is a nice guide for doing that on RBloggers

Answer 2

I checked all of the suggestions. None of them worked.
This worked for me on Windows 10
1- Open rstudio and uninstall these package if you already installed using:
uninstall.packages(c("keras", "tensorflow","tfruns"))
2- uninstall rtools from your computer if exists
3- Install Anaconda from https://www.anaconda.com/products/individual
4- Install the last version of rtools from https://cran.r-project.org/bin/windows/Rtools/
5- Close rstudio if it is opened
6- open new session and write this:
install.packages("reticulate")
install.packages("remotes")
library("reticulate")
remotes::install_github("rstudio/tensorflow")
library(tensorflow)
install_tensorflow(version = "2.0.0b1", method = "conda", envname = "r-reticulate")
remotes::install_github("rstudio/keras", dependencies = TRUE)
library(keras)
7- check if they work:
#if tensorflow works
tf$abs(-1)
#if keras works
mnist <- dataset_mnist()

Answer 3

my suggestion is to install anaconda and create an environment called "r-reticulate".
you can do it using anaconda navigator or
reticulate::conda_create(envname = "r-reticulate")
then to check that env detected by reticulate, use reticulate::conda_python().it must return directory of python.exe for your env.
after that you can install tensorflow by install_tensorflow(). [not working in my case]
so I install the tesnorflow from CMD.
follow these steps:
open the cmd :]
activate the r-reticulate env using conda activate r-reticulate (you may need your directory to conda directory if you did not add conda to your PATH)
use : conda install -c anaconda tensorflow
now in R, you can use TensorFlow.
for installing Keras, you can use pip install Keras. [I tried install_keras() function after the installation of tensorflow, but it n