i've done it with '=='

?

NPC Solution

Why don't you test it? Click Fork, add some test, see if it works.

check("abc", "abcd", False)

There is already a test for that. The answer to your question is no, it works fine.

But what if "ending" is in the beginning of "string"? Would there be incorrect True return?

You need to assign the return value to a variable and output it
like：
result = solution('abcde' , 'de')
print(result)

Big brain time.

Can i ask why this works?

Mine failed on the ' ' empty

sorry :)

Use spoiler flag next time, please.

666