python编译markdown时，html内容会重复增加

Question

代码如下

md.py：

def main(argv):
  md_name = argv[0]
  with open(md_name, mode='r', encoding='gbk') as mdfile:
    # with codecs.open("friendly.css", mode='r', encoding='utf-8') as cssfile:
    md_text = mdfile.read()
    # css_text = cssfile.read()

    extras = ['code-friendly', 'fenced-code-blocks', 'footnotes']
    html_text = markdown.markdown(md_text, extras=extras)
    print(html_text)
    html_name = '%s.html' % (md_name[:-3])
    with open(html_name, 'w', encoding='utf-8', errors='xmlcharrefreplace') as output_file:
      output_file.write(html_text)

if __name__ == "__main__":
  if len(sys.argv) == 2:
    main(sys.argv[1:])
  else:
    print("Error:please specify markdown file path")

md.md

####因子分析
<p><iframe style="width: 100%; height: 500px;" src="../report/dataBaseStatus.html" frameborder="0" width="320" height="240"></iframe></p>

编译 python mk.py mk.md >> mk.html

第一次编译时

第二次编译时

内容不会重新覆盖
请问应该怎么解决呢

Answer 1

你已经用python写文件了

...
 html_name = '%s.html' % (md_name[:-3])
    with open(html_name, 'w', encoding='utf-8', errors='xmlcharrefreplace') as output_file:
      output_file.write(html_text)

就不需要再用shell转向了：

 python mk.py mk.md >> mk.html

二者保留一个就好。