list = [
    1, 2, 3, 4, 5, 6
]

# remove even entries while looping

for i, j in enumerate(list):
    print(i, j)

0 1
1 2
2 3
3 4
4 5
5 6

for i, j in enumerate(list):
    if(j % 2 == 0):
        del list[i]

list

[1, 3, 5]

# Short form
new_list = [x for x in list if x % 2 == 1]

new_list

[1, 3, 5]

list = [1, 2, 3, 4, 5, 6, 7, 8]

from itertools import filterfalse

list[:] = filterfalse((lambda x: x%3), list)

list

[3, 6]