$ python crawling.py -h
usage: crawling.py [-h] -w WORD -tp TOTAL_PAGE -sp START_PAGE
                   [-pp [{10,20,30,40,50,60,70,80,90,100}]] [-d DELAY]

optional arguments:
  -h, --help            show this help message and exit
  -w WORD, --word WORD  抓取关键词
  -tp TOTAL_PAGE, --total_page TOTAL_PAGE
                        需要抓取的总页数
  -sp START_PAGE, --start_page START_PAGE
                        起始页数
  -pp [{10,20,30,40,50,60,70,80,90,100}], --per_page [{10,20,30,40,50,60,70,80,90,100}]
                        每页大小
  -d DELAY, --delay DELAY
                        抓取延时（间隔）

python crawling.py --word "美女" --total_page 10 --start_page 1 --per_page 30