Sometimes in verification, we have Python scripts that generate data, but the input needs to come from SystemVerilog or UVM.
♦ How do we achieve this?
⇒ Solution
SystemVerilog provides the $system function, which lets us call external scripts (like Python) directly from a testbench.
Example
Suppose we want to generate an array in Python, but the array size comes from SystemVerilog/UVM.
With $system, we can pass the size as input, run the Python script, and bring the generated data back into our verification environment.
Why it’s useful?
The $system function helps us:
Call Python functions from SystemVerilog
Seamlessly exchange data between SV and Python
Simplify floating-point math, data processing, or automation
Boost productivity in complex verification tasks.
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