How to arrange values

Course Name: Options Trading Strategies In Python: Basic, Section No: 4, Unit No: 6, Unit type: Notebook

in [5] the last section of the code 

sT = np.arrange 

how did we calculate the value? 

.9 & 1.05

The arange method of NumPy returns evenly spaced values within a given interval.

sT = np.arange(0.9*spot_price,1.05*spot_price,1) 

The above line of code generates numbers between 0.9* spot_price to 1.05*spot_price.

If the spot price is 100, then the outcome of sT can be: 90, 91, 92,.......104 as the default step is 1 and the last value is not included in the array. 

Here, 0.9 and 1.05 are random numbers used to estimate the stock price at call options expiration. 

Hope that helps.