调用列表值的变量 - python

Question

I need my game to run this:

def w_win(l,l2,check):
    line = l
    line2 = l2
    for x in range(4):
        if line[x] == line2[x]:
            if len(str(check+check)) == 1:
                line[x] = "  "+str(check+check)+" "
            if len(str(check+check)) == 2:
                line[x] = "  "+str(check+check)+""
            if len(str(check+check)) == 3:
                line[x] = " "+str(check+check)
            if len(str(check+check)) == 4:
                line[x] = str(check+check) 

but then I get this:

if line[x] == line2[x]:

TypeError: 'NoneType' object has no attribute '__getitem__'

and I'm calling with

for p in range(2,1025):

    first = w_win([" ","2","16"," "],[" ","2"," ","32"],p)

any help?

Answer 1

Your w_win function is missing the return statement which is required when you are assigning the function's value to the variable 'first'. In your case the variable first is initialized to Class of 'NoneType' because of missing return statement.