Daniel Arbuckle's Mastering Python

Empty, return_value, and from_iterable factory methods

Empty sequences and sequences of one value are easy to create using the empty and return_value factory methods, respectively. These can be shown using two commands, which are illustrated with their help pages respectively.

help (rx.Observable.empty)  

This command will lead us to the following help page:

Similarly, in the case of return_value, we can use this command:

help (rx.Observable.return_value)  

We'll get this help page explaining how to use the method:

Similarly, it's easy to ...