How to extract a substring from a string in Python 3

Question

I am trying to pull a substring out of a function result, but I'm having trouble figuring out the best way to strip the necessary string out using Python.

Output Example:

[<THIS STRING-STRING-STRING THAT THESE THOSE>]

In this example, I would like to grab "STRING-STRING-STRING" and throw away all the rest of the output. In this example, "[<THIS " &" THAT THESE THOSE>]" are static.

question from:https://stackoverflow.com/questions/65925833/how-to-extract-a-substring-from-a-string-in-python-3

Answer 1

If by '"[<THIS " &" THAT THESE THOSE>]" are static' you mean that they are always the exact same string, then:

s = "[<THIS STRING-STRING-STRING THAT THESE THOSE>]"
before = len("[<THIS ")
after = len(" THAT THESE THOSE>]")
s[before:-after]
# 'STRING-STRING-STRING'