[Python] How to highlight each line of code in manim?

I am working on a coding tutorial and would like to show each line of code with a surrounded rectangle (color filled ofcourse) and display an action performed as each line of the code is highlighted.

I want my code to be on the left side of the screen and actions performed on the right side of the screen.

So far I have written my code in a seperate .py file and have visualized it using manim's Code class. But when I draw surrounded rectangles around each line of the code, the rectangles just wildly appear in the whole window. Can you please help me how to do it?

This is what I have done so far

code = Code("queueDS.py", language="python", insert_line_no=True, background="window", style="monokai", fill_color=BLUE)

for eachLine in code.code:
surr = SurroundingRectangle(eachLine, color=BLUE, fill_opacity=0.5)

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