pip install cssselect==1.1.0

cssselect parses CSS3 Selectors and translates them to XPath 1.0

Source
Among top 1000 packages on PyPI.
Over 8.8M downloads in the last 90 days.

Commonly used with cssselect

Based on how often these packages appear together in public requirements.txt files on GitHub.

w3lib

Library of web-related functions

queuelib

Collection of persistent (disk-based) queues

Scrapy

A high-level Web Crawling and Web Scraping framework

parsel

Parsel is a library to extract data from HTML and XML using XPath and CSS selectors

PyDispatcher

Multi-producer-multi-consumer signal dispatching mechanism

scraper

Configurable Python Web Scraper

scrapyd

A service for running Scrapy spiders, with an HTTP API

scrapyd-client

A client for scrapyd

characteristic

Python attributes without boilerplate.

scrapy-mongodb

Pipeline to MongoDB for Scrapy. Supports MongoDB replica sets

Twisted

An asynchronous networking framework written in Python

urltools

Some functions to parse and normalize URLs.

constantly

Symbolic constants in Python

incremental

None

scrapy-splash

JavaScript support for Scrapy using Splash

scrapy-djangoitem

Scrapy extension to write scraped items using Django models

Automat

Self-service finite-state machines for the programmer on the go.

Protego

Pure-Python robots.txt parser with support for modern conventions

hyperlink

A featureful, immutable, and correct URL for Python.

Version usage of cssselect

Proportion of downloaded versions in the last 3 months (only versions over 1%).

1.1.0

91.98%

1.0.3

6.69%