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Python

Daniel Čupak
Daniel Čupak
6,602 Points
Posted by Daniel Čupak
Daniel Čupak
6,602 Points

multiply position in a list

I want to append a list hundred times like this:

x = [0, 0, 1]
iters = 0
    while iters < 100:

    x = x + [0,0,3]
    print(x)

    iters += 1

but I would like it everytime to grow the third element by 3 e.g. [0, 0, 1, 0, 0, 3, 0, 0, 9] etc. but I am not able to figure it out...

2 Answers

Andreas cormack
.a{fill-rule:evenodd;}techdegree seal-36
Andreas cormack
Python Web Development Techdegree Graduate 33,011 Points

Hi Daniel

Does this code work for you. See below

mylist = [0, 0, 1]
new_list=[]
for i in range(1,101):
  new_list=[mylist[0],mylist[1],(i*3)]
  mylist.extend(new_list)
print(mylist)


output 

[0, 0, 1, 0, 0, 3, 0, 0, 6, 0, 0, 9, 0, 0, 12, 0, 0, 15, 0, 0, 18, 0, 0, 21, 0, 0, 24, 0, 0, 27, 0, 0, 30, 0, 0, 33, 0, 0, 36, 0, 0, 39, 0, 0, 4
2, 0, 0, 45, 0, 0, 48, 0, 0, 51, 0, 0, 54, 0, 0, 57, 0, 0, 60, 0, 0, 63, 0, 0, 66, 0, 0, 69, 0, 0, 72, 0, 0, 75, 0, 0, 78, 0, 0, 81, 0, 0, 84, 0
, 0, 87, 0, 0, 90, 0, 0, 93, 0, 0, 96, 0, 0, 99, 0, 0, 102, 0, 0, 105, 0, 0, 108, 0, 0, 111, 0, 0, 114, 0, 0, 117, 0, 0, 120, 0, 0, 123, 0, 0, 1
26, 0, 0, 129, 0, 0, 132, 0, 0, 135, 0, 0, 138, 0, 0, 141, 0, 0, 144, 0, 0, 147, 0, 0, 150, 0, 0, 153, 0, 0, 156, 0, 0, 159, 0, 0, 162, 0, 0, 16
5, 0, 0, 168, 0, 0, 171, 0, 0, 174, 0, 0, 177, 0, 0, 180, 0, 0, 183, 0, 0, 186, 0, 0, 189, 0, 0, 192, 0, 0, 195, 0, 0, 198, 0, 0, 201, 0, 0, 204
, 0, 0, 207, 0, 0, 210, 0, 0, 213, 0, 0, 216, 0, 0, 219, 0, 0, 222, 0, 0, 225, 0, 0, 228, 0, 0, 231, 0, 0, 234, 0, 0, 237, 0, 0, 240, 0, 0, 243,
 0, 0, 246, 0, 0, 249, 0, 0, 252, 0, 0, 255, 0, 0, 258, 0, 0, 261, 0, 0, 264, 0, 0, 267, 0, 0, 270, 0, 0, 273, 0, 0, 276, 0, 0, 279, 0, 0, 282, 
0, 0, 285, 0, 0, 288, 0, 0, 291, 0, 0, 294, 0, 0, 297, 0, 0, 300]