{"library":"publicsuffix2","title":"publicsuffix2: Public Suffix List Parser","description":"publicsuffix2 is a Python library designed to parse and identify the public suffix of a domain name using the official Public Suffix List (PSL). It is a fork of the original 'publicsuffix' package, aiming for API compatibility. The current version is 2.20191221, released in late 2019, meaning its bundled PSL data is not recent.","language":"python","status":"maintenance","last_verified":"Sat May 16","install":{"commands":["pip install publicsuffix2"],"cli":null},"imports":["from publicsuffix2 import PublicSuffixList"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"from publicsuffix2 import PublicSuffixList\n\n# Initialize the PublicSuffixList parser\npsl = PublicSuffixList()\n\n# Get the public suffix for various domains\nprint(f\"google.com -> {psl.get_public_suffix('www.google.com')}\")\nprint(f\"co.uk -> {psl.get_public_suffix('test.co.uk')}\")\nprint(f\"github.io -> {psl.get_public_suffix('myblog.github.io')}\")\nprint(f\"local domain (should be None) -> {psl.get_public_suffix('localhost')}\")\nprint(f\"invalid domain (should be None) -> {psl.get_public_suffix('not-a-domain')}\")","lang":"python","description":"Initialize PublicSuffixList and use `get_public_suffix()` to extract the registrable domain from a given hostname. It returns None for hosts that are not valid domains or do not have a recognizable public suffix.","tag":null,"tag_description":null,"last_tested":null,"results":[]},"compatibility":{"tag":null,"tag_description":null,"last_tested":"2026-05-16","installed_version":"2.20191221","pypi_latest":"2.20191221","is_stale":false,"summary":{"python_range":"3.10–3.9","success_rate":100,"avg_install_s":1.5,"avg_import_s":0.08,"wheel_type":"wheel"},"results":[{"runtime":"python:3.10-alpine","python_version":"3.10","os_libc":"alpine (musl)","variant":"publicsuffix2","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.07,"mem_mb":3.6,"disk_size":"18.1M"},{"runtime":"python:3.10-slim","python_version":"3.10","os_libc":"slim (glibc)","variant":"publicsuffix2","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":1.4,"import_time_s":0.05,"mem_mb":3.6,"disk_size":"19M"},{"runtime":"python:3.11-alpine","python_version":"3.11","os_libc":"alpine (musl)","variant":"publicsuffix2","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.11,"mem_mb":3.8,"disk_size":"19.9M"},{"runtime":"python:3.11-slim","python_version":"3.11","os_libc":"slim (glibc)","variant":"publicsuffix2","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":1.5,"import_time_s":0.1,"mem_mb":3.8,"disk_size":"20M"},{"runtime":"python:3.12-alpine","python_version":"3.12","os_libc":"alpine (musl)","variant":"publicsuffix2","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.09,"mem_mb":3.7,"disk_size":"11.8M"},{"runtime":"python:3.12-slim","python_version":"3.12","os_libc":"slim (glibc)","variant":"publicsuffix2","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":1.5,"import_time_s":0.1,"mem_mb":3.7,"disk_size":"12M"},{"runtime":"python:3.13-alpine","python_version":"3.13","os_libc":"alpine (musl)","variant":"publicsuffix2","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.08,"mem_mb":3.4,"disk_size":"11.5M"},{"runtime":"python:3.13-slim","python_version":"3.13","os_libc":"slim (glibc)","variant":"publicsuffix2","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":1.5,"import_time_s":0.08,"mem_mb":3.2,"disk_size":"12M"},{"runtime":"python:3.9-alpine","python_version":"3.9","os_libc":"alpine (musl)","variant":"publicsuffix2","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":null,"import_time_s":0.07,"mem_mb":3.5,"disk_size":"17.6M"},{"runtime":"python:3.9-slim","python_version":"3.9","os_libc":"slim (glibc)","variant":"publicsuffix2","exit_code":0,"wheel_type":"wheel","failure_reason":null,"import_side_effects":"clean","install_time_s":1.7,"import_time_s":0.07,"mem_mb":3.5,"disk_size":"18M"}]}}