How can I calculate the treatment effect function in a double machine learning model?

[Wangpc-972]

On this website, the fourth line of code is:

# Treatment effect function  
def exp_te(x):  
    return np.exp(2*x[0])

How can I obtain such an equation from real data? Or how can I calculate the 'True effect'?

Looking forward to your reply.
Thank you/

[kbattocchi]

In a real application, the true treatment effect will be unknown. The effect method of our estimators is how you'd estimate it; for example the notebook you're referencing shows the estimates of a few different estimators compared to the true effect after cell 10.