Module 4
Negative indexing
Counting from the end.
From the end
Python lets you count from the end of a string using negative indices. -1 is the last character, -2 is the second to last, and so on.
Python
seq = "ATGC" print(seq[-1]) print(seq[-2])
→ C
G
Your task
Negative index
- Store ATGC and print the last character using a negative index.