Please explain how " rocket " is on index 1 and "plane" on index 4

Question

m=["car","plane","train","bike","rocket"]
n=sorted (m, key=lambda x: x[-2])
print(n)

Answer 1

The lambda specifies that the items in list <m> are to be sorted by the second to last character of the items.

car -> a
rocket -> e
train -> i
bike -> k
plane -> n

See? the items are sorted by the second to the last character.