How to remove a string within a string

Question

I am working on something in Python that reads a file and outputs some text. Let's say that I have this string:

a = "hello // world"

Using this function, I would remove the part of the string that comes after the double slash

def magic(input):
    return "hello "

How could I achieve this simply in python? (Basically I want to remove everything after the //)

Might be helpful - [str.split](https://docs.python.org/3/library/stdtypes.html?highlight=str%20split#str.split) — dumbPotato21, Apr 14 '22 at 02:17

score 1 · Answer 1 · answered Apr 14 '22 at 02:28

1

Regular expressions are often a lot of trouble, but for certain problems they're perfect.

>>> import re
>>> re.sub('//.*', '', 'hello // world')
'hello '

answered Apr 14 '22 at 02:28

Mark Ransom

score 0 · Answer 2 · answered Apr 14 '22 at 02:18

0

Use find() to get the position of the double slashes. Then take a slice of the original string up to that position.

a = "hello // world"
pos = a.find("//")
return a[:pos]

answered Apr 14 '22 at 02:18

John Gordon

score 0 · Answer 3 · answered Apr 14 '22 at 02:25

0

>>> 'hello//world'.split('//')[0]
'hello'
>>>

answered Apr 14 '22 at 02:25

mhega

3 Answers3