How to extract the substring between two markers?

Question

Let\'s say I have a string \'gfgfdAAA1234ZZZuijjk\' and I want to extract just the \'1234\' part.

I only know what will be the few characte

Answer 1

text = 'I want to find a string between two substrings'
left = 'find a '
right = 'between two'

print(text[text.index(left)+len(left):text.index(right)])

Gives

string