将位置编号添加到列表中的整数

Question

I need to add the number of the position of the integer in a list.

list=[10,10,10,10]

then the outcome should be

[10,11,12,13]

I know it works whit a loop but I dont know how. Thanks

Answer 1

Get the index using enumerate and add each element to it's index using a list comprehension :

lst = [10,10,10,10]
lst[:] = [i + ele for i,ele in enumerate(lst)]
print(lst)
[10, 11, 12, 13]

Which is the same as:

lst = [10, 10, 10, 10]

for i, ele in enumerate(lst):
    lst[i]  = i + ele
print(lst)

i is the index of each element , ele is each actual element in the list. The lst[:] syntax means we modify the original list and using the list comp is a more efficient version of the regular loop.