Python for loop in enumerate list goes for infinite

Question

I have a list of numbers and I want to run a for-loop through it, but as I update the list, the for loop does not stop and runs infinite time, here is my code:

a = [0,1,2,3,4,5,6]
for index, item in enumerate(a):
   if item>0:
       a.insert(index,10)

What should I do to just update and insert into list "a" and just doing for loop for pre defined list before adding new items?

Answer 1

Is that what you are looking for? (it is not clear..)
The code replaces every positive value with 10

a = [0, 1, 2, 3, 4, 5, 6]
a1 = [10 if x > 0 else x for x in a]
print(a1)

output

[0, 10, 10, 10, 10, 10, 10]

Answer 2

您可以遍历此列表的副本：

for index, item in enumerate(a.copy()):