It doesn’t take a 50 engineers team and a 1M lines of code project to predict anything these days.

new_pred = regressor.predict(new_dataset)

Just one line of code. As simple as that.

The real work (for which you need brain power more than lines of code) is in:

1) Selecting the variables that truly matter to predict a new variable
2) Compose and clean up the training data set (and keep it updated!)
3) Try different prediction models, score them and use the most efficient
4) Provide a dataset with known values to predict unknown values
5) Format the outputs in a way that makes business sense

For a simple supervised learning / linear regression prediction of reach within Facebook, for a given budget and a given age group, you can check out my -short- example here:

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