Python remove the last character from a string

Let's say my string is 10 characters long.

How do I remove the last character?

If my string is "abcdefghij" (I do not want to replace the 'j' character, since my string may contain multiple 'j' characters) I only want the last character gone. Regardless of what it is or how many times it occurs, I need to remove the last character from my string.