Extract text based on postion and pattern

[guddu_12]

Hello Gurus,

I am from sql background and i am working on one python requirement to extract text from the give string based on position and pattern.

For e.g

input search_pattern position expected_output
'inf***maint***three' *** 2 maint
'but@@milk@@ghee @@ 3 ghee
'but@@milk@@ghee @@ -3 but

Have tried above using substring and instr in sql but very leangth code.

Can any one guide me