I have a string in python and I'd like to take off the last three characters. How do I go about this?
So turn something like 'hello' to 'he'.
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6 Answers
>>> s = "hello"
>>> print(s[:-3])
he
For an explanation of how this works, see the question: good primer for python slice notation.
Comments
Here's a couple of ways to do it.
You could replace the whole string with a slice of itself.
s = "hello"
s = s[:-3] # string without last three characters
print s
# he
Alternatively you could explicitly strip the last three characters off the string and then assign that back to the string. Although arguably more readable, it's less efficient.
s = "hello"
s = s.rstrip(s[-3:]) # s[-3:] are the last three characters of string
# rstrip returns a copy of the string with them removed
print s
# he
In any case, you'll have to replace the original value of the string with a modified version because they are "immutable" (unchangeable) once set to a value.
1 Comment
se1by
Be careful with the last option:
s = "helloxxxhelloxxx" s = s.replace(s[-3:], '') print s"hello"[:-3] - first length - 3 characters.
"hello"[:2] - first 2 characters.
Comments
type "hello"[:2]
or "hello"[:-3] which is the answer for removing the last three letters
hope this helps
2 Comments
Chris Morgan
This is not what was requested; what was requested was to remove the last three, not take the first two.
Saif al Harthi
i just focused on the "he" from "hello" :) , its ok though
"hello"[:2] is the easiest way to do this however the accurate answer for the problem
would be as Saif al Harthi stated. "hello"[:-3]
Comments
if x is your string then you can use x[:len(x)-3:+1] to get the desired result
1 Comment
Davidmh
This works, but it is a very bad style, inefficient, redundant, and therefore bug-prone.