JMeter - Run a python script before calling each HTTP request sampler

Question

I am new to Jmeter. My HTTP request sampler call looks like this

Path= /image/**image_id**/list/
Header =  \"Key\" : \"Key_Value\"

Key value is

Answer 1

A possible solution posted by Eugene Kazakov here:

JSR223 sampler has good possibility to write and execute some code, just put jython.jar into /lib directory, choose in "Language" pop-up menu jython and write your code in this sampler.

Sadly there is a bug in Jython, but there are some suggestion on the page.

More here.