Here\'s the code:
The_Start = [1,1] The_End = [1, 1] for z in range(20): for x in range(len(The_Start) - 1): y = The_Start[x] + The_Start[x + 1]
You need parenthesis instead of []:
[]
The_End.insert(x + 1, y)
You need to change the brackets in The_End.insert[x + 1, y] to parenthesis.
The_End.insert[x + 1, y]
It's good practice in Python to use lowercase variable names. Uppercase is generaly used for classes.