Mac下scrapy的安装

1. mac自带python 的版本是2.7

 python --version
Python 2.7.16

1. 安装3.7版本，设置别名为python3

 brew install python3

1. 安装pip到python3环境

 curl https://bootstrap.pypa.io/get-pip.py | python3

1. 安装xcode命令行工具

 xcode-select --install

1. 安装scrapy

 pip install scrapy

1. 安装成功

 scrapy
Scrapy 2.2.0 - no active project

Usage:
  scrapy <command> [options] [args]

Available commands:
  bench         Run quick benchmark test
  commands
  fetch         Fetch a URL using the Scrapy downloader
  genspider     Generate new spider using pre-defined templates
  runspider     Run a self-contained spider (without creating a project)
  settings      Get settings values
  shell         Interactive scraping console
  startproject  Create new project
  version       Print Scrapy version
  view          Open URL in browser, as seen by Scrapy

  [ more ]      More commands available when run from project directory

Use "scrapy <command> -h" to see more info about a command