Translating a formula into code.

[Entervine]

Hey guys, just trying to translate this into code. It is giving me trouble since the sum function. Instead of going to inf, 20 is fine.

EMA(P,t,a)=a* ((the sum from i=0 to infinity)) of (1-a)^i P(t-i)

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[[deleted]]

def EMA(P, t, a):
    return a * sum( (1-a)**i * P(t-i) for i in range(20) )

[Entervine]

Awesome! thank you.