Pls how do i subtract strings?

Question

for example: name = 'Sololearn', namer = Solo, namest = 'learn', nameful = 'lole
name - namer = 'learn', name - namest = 'Solo'', name-nameful = 'Soarn'
I tried three methods but i doesn't work for all cases
1. using list(set(list))) but this had issues with double letters
2. using str.rstrip() but it failed when in cases like (Sololearn - Solo)
3. using str.strip() but it failed in cases like (SololearnSolo - Solo)

P.S I'm trying to create an __sub__ magic method in a particular class i created

Answer 1

def __sub__(self, other):
return self.replace(other, '', 1)

Where self and other are both str objects this would remove the first found substring of other in self and return the new string.

Here's an example where I extend the str class and use a Mixin for the sub magic method.

https://code.sololearn.com/cUlDU0ddJ1G3/?ref=app

Answer 2

ChaoticDawg Thanks man. I'll try it in my code

Answer 3

Why does name-namer='learn' ?

Answer 4

@Abhay, SOLOLEARN - SOLO = LEARN

Answer 5

So i tried a few more methods including the one by ChaoticDawg and there were always different bugs in different cases so i came to the conclusion that strings are not built for the '-' operator

Answer 6

Thanks Runtime Terror and ChaoticDawg