scrapy遇到的常见错误-Unknown command: crawl

1、在cmd中输入scrapy crawl mySpider 提示如下

D:\python_crawl\crawl_software>scrapy crawl mySpider
Scrapy 1.3.0 - no active project

Unknown command: crawl

Use “scrapy” to see available commands
原因：

没有cd到项目根目录，因为crawl会去搜搜cmd目录下的scrapy.cfg