If/else confusion in python

Question

result = int(input())

expressions = input().split(" ")

for exp in expressions:
if eval(exp) == result:
result = expressions.index(exp)
print ("index "+ str(result))
break
else:
print ("none")

I was trying to solve a problem and I was stuck. Somehow I accidentally solved it by changing the indentation of else block. I didn't know that else block could be used without if block. Can somebody explain this to me?

Answer 1

https://www.w3schools.com/JUMP_LINK__&&__python__&&__JUMP_LINK/python_for_loops.asp
scroll down to;- "Else in For Loop"

Answer 2

you have a "for else" expression there.
The else is executed if you don't return a true result from the for expression
Example below:
https://code.sololearn.com/czWhMgIjlK4B/?ref=app

Answer 3

Thanks rodwynnejones Rik Wittkopp I was unaware of this *else in for loop thing*.

Got it now. Thanks a lot again!!