PySV

0.3.1 verified Mon Apr 27 auth: no python

PySV is a Python library for reading, writing, and converting SystemVerilog files. Version 0.3.1, released periodically on GitHub.

pip install pysv

Common errors

error ModuleNotFoundError: No module named 'pysv' ↓

cause Library not installed or installed in wrong environment.

fix

Run pip install pysv and verify with pip list | grep pysv.

error AttributeError: module 'pysv' has no attribute 'SystemVerilogParser' ↓

cause Incorrect import path; older library version.

fix

Use from pysv import SystemVerilogParser. Upgrade pysv: pip install --upgrade pysv.

error FileNotFoundError: [Errno 2] No such file or directory: 'example.sv' ↓

cause File not found at given path.

fix

Provide absolute path or ensure file exists in current working directory.

breaking PySV is still in early development (pre-1.0). API may change without deprecation. ↓

fix Pin exact version in requirements.txt and test upgrades.

gotcha Parser requires SystemVerilog-2005 or earlier; does not fully support newer constructs (e.g., interfaces, assertions). ↓

fix Check documentation for supported features; use alternative for advanced SV.

gotcha File path in parse_file must be absolute or relative to CWD; no automatic resolution. ↓

fix Use os.path.abspath() or set working directory accordingly.

SystemVerilogParser

wrong

from pysv.parser import SystemVerilogParser

correct

from pysv import SystemVerilogParser

Incorrect submodule path

Parse a SystemVerilog file and list module names.

from pysv import SystemVerilogParser

parser = SystemVerilogParser()
design = parser.parse_file('example.sv')
print(design.get_module_names())