The code isn't working

Question

So, I have a code that must return text between two characters:
cont = ("0. ZEROZEROZERO: Isome textt> 1.ONENEONE: some other text, 2. TWOTWOTWOwtqwhw: 3.THREE: qweqweqeqwe 4.FOURFOUR: qrqrqrqrqr, 5.FIVEFIVE:")

def find_between(text, first, last):
try:
start = text.index(str(first))
end = text.index(last)
print(text[start:end])
except ValueError:
return ""

find_between(cont, 3, ":")
The code must print text between 3 and ":"
But it's not printing anything, but the code runs correctly if I search between zero and ":"

Answer 1

your first case works as start and end index is fine.....

for rest all cases , always search result for : is lesser than your start value...

just do below change in code and it should be fine :

end = text.find(last,start)

above should always find last character after first character index

Answer 2

start = text.index(first + '.')

Don't know if this is the only issue

Answer 3

Thank you so much!