关于论证意义的简单问题

Question

所以我是运行这个命令 scrapy crawl dmoz -o items.json 我只是不明白 -o 是什么意思。我研究过，但找不到。是输出的意思吗？我不确定。

谢谢！

Answer 1

我运行scrapy crawl -h得到选项：

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

完整帮助：

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

关于论证意义的简单问题

Simple questions about the meaning of an argument

python

scrapy