I'm quite new to Python and trying to do something but cannot figure out how...
x = 20
list = [5, 3, 7]
I want to create a loop that add the previous element from the list to x
Loop 1 : result = 20+0 = 20 (no previous element)
Loop 2 : result = 20+5 = 25
Loop 3 : result = 20+5+3 = 28
So at the end result should look like that : result = [20, 25, 28]
Any idea how I could achieve this result ?
Thank you for your help!
Here's how I'd do it:
>>> x = 10
>>> my_list = [5, 3, 7]
>>> [x + sum(my_list[:n]) for n in range(len(my_list))]
[10, 15, 18]
Note that naming a list list is a bad idea because it overwrites the builtin list function!
Try it:
x = 20
my_list = [5, 3, 7]
result = [x]
for i in range(len(my_list)-1):
x += my_list[i]
result.append(x)
print(result)
You can use a list comprehension:
x = 20
lst = [5, 3, 7]
lst = [x+sum([lst[i] for i in range(i)]) if i else x for i,n in enumerate(lst)]
print(lst)
Output:
[20, 25, 28]
x,10or20?