Python ForLoop indexing

[Lunar Evolution]

I need to make a loop in python that is checking a list of numbers at as such:

for x in range(y):
  if a == x+1:
	n += 1

So that the variable y will naturally iterate past its index range. So I need to know how I can accomplish this without being stopped by the index out of range error.

[mathijs727]

If I understand the question correctly you want to change the range from within the for loop?

In Python you need to use a while loop to do something like that:

x = 0
while (x < y):
    if ...:
        y += 1
    x += 1

 

[Lunar Evolution]

4 minutes ago, mathijs727 said:

If I understand the question correctly you want to change the range from within the for loop?

In Python you need to use a while loop to do something like that:

x = 0
while (x < y):
	if ...:
    	y += 1
    x += 1

 

While that is a good solution, I probably should've mentioned that the for loop is also doing many other things on every iteration, including extracting one line of a file each time into a variable. So I need  a solution that allows me to keep the for loop, but iterate perhaps in a way that doesn't cause an error.

[mathijs727]

2 hours ago, Lunar Evolution said:

While that is a good solution, I probably should've mentioned that the for loop is also doing many other things on every iteration, including extracting one line of a file each time into a variable. So I need  a solution that allows me to keep the for loop, but iterate perhaps in a way that doesn't cause an error.

That is what i am suggesting.

You can extend my while loop example with whatever code you want:

x = 0
while (x < y):
    INSERT CODE HERE
    if ...:
        y += 1
    OR HERE MAYBE?
    x += 1