How to determine if the symbol is an option?

[evanevans]

What's the prevailing method for figuring out if the symbol of a chart, is an option's contract?

 

[BenTen]

Ticker for S&P 500 = SPY. Ticker for the SPY call option (Expiration: September 11. Strike = 340) = .SPY200911C340

 

[evanevans]

Thanks @BenTen, but I am asking something different, I will try and explain.

What I mean is, how can ThinkScript know if the current chart is displaying an option or a stock? But I guess you gave me one hint. I could check if the ticker symbol starts with a "."

 

[evanevans]

This is what I wound up using, seems to have worked:

def IsOption = if GetStrike()>0 then 1 else 0;

 

[rad14733]

Check for GetUnderlyingSymbol() is a possibility... Also IsPut() and IsOptionable()...