Why does RN need jdk, androidsdk, node, python2? 
 what are their respective roles? 
sdk depends on jdk?
is python a must? Why does it have to be python2? His role document does not explain what he is doing
 Why does RN need jdk, androidsdk, node, python2? 
 what are their respective roles? 
sdk depends on jdk?
is python a must? Why does it have to be python2? His role document does not explain what he is doing
 it's best not to make it so complicated. After you install both Xcode and Android Studio, you can run the simulator, 
 can do RN development 
python is not necessary, jdk androidsdk because you want to generate Android environment, and these are needed for Android environment