Question

所以我正在运行此命令 scrapy crawl dmoz -o items.json 我只是不明白什么意思。我已经研究过，但无法找到它。这是否意味着输出？我不确定。

谢谢！

Answer 1

我运行scrapy crawl -h来获取选项：

--output=FILE, -o FILE  dump scraped items into FILE (use - for stdout)

完整的帮助：

Run a spider

Options
=======
--help, -h              show this help message and exit
-a NAME=VALUE           set spider argument (may be repeated)
--output=FILE, -o FILE  dump scraped items into FILE (use - for stdout)
--output-format=FORMAT, -t FORMAT
                        format to use for dumping items with -o

Global Options
--------------
--logfile=FILE          log file. if omitted stderr will be used
--loglevel=LEVEL, -L LEVEL
                        log level (default: DEBUG)
--nolog                 disable logging completely
--profile=FILE          write python cProfile stats to FILE
--lsprof=FILE           write lsprof profiling stats to FILE
--pidfile=FILE          write process ID to FILE
--set=NAME=VALUE, -s NAME=VALUE
                        set/override setting (may be repeated)
--pdb                   enable pdb on failure

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