Checking two string in python?

Question

let two strings

s='chayote'
d='aceihkjouty'

the characters in string s is present in d Is there any built-in python function to accomplish this ?

Thanks In advance

To help people help you, it's usually a good idea to be even more specific. By "the characters in string s present in d", do you mean you care, or don't care, about multiplicity? For example, if s = "aabbcc" and d = "abc", do you want True (because a, b, and c are in d), or False, because there are 2 a characters in s and only 1 in d? — DSM
– DSM, Commented Mar 19, 2014 at 15:45

Frédéric Hamidi · Accepted Answer · 2014-03-19 20:23:22Z

5

Using sets:

>>> set("chayote").issubset("aceihkjouty")
True

Or, equivalently:

>>> set("chayote") <= set("aceihkjouty")
True

answered Mar 19, 2014 at 15:41

Frédéric Hamidi

264k42 gold badges497 silver badges486 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

You beat me...this is the classical way to do it because the problem is inherently a problem of Set theory.

score 4 · Accepted Answer · 2014-03-19 15:51:31Z

4

I believe you are looking for all and a generator expression:

>>> s='chayote'
>>> d='aceihkjouty'
>>> all(x in d for x in s)
True
>>>

The code will return True if all characters in string s can be found in string d.

Also, if string s contains duplicate characters, it would be more efficient to make it a set using set:

>>> s='chayote'
>>> d='aceihkjouty'
>>> all(x in d for x in set(s))
True
>>>

answered Mar 19, 2014 at 15:38

user2555451

IVlad · Accepted Answer · 2015-08-18 10:40:40Z

2

Try this

for i in s:
    if i in d:
        print i

IVlad

43.6k13 gold badges115 silver badges184 bronze badges

answered Aug 18, 2015 at 9:51

fahad

3,1993 gold badges20 silver badges20 bronze badges