markdown公式转为知乎格式

    在知乎中写技术类文章，经常会用到markdown知乎文章可以导入markdown格式，但是不支持Latex公式。知乎大神提供了替代方案： https://zhuanlan.zhihu.com/p/69142198

    为实现自动化，用python将其简易实现，代码如下：

import re

import sys

def replace(file_name, output_file_name):

    try:

        pattern1 = r"\$\$\n*([\s\S]*?)\n*\$\$"

        new_pattern1 = r'\n<img src="https://www.zhihu.com/equation?tex=\1" alt="\1" class="ee_img tr_noresize" eeimg="1">\n'

        pattern2 = r"\$\n*(.*?)\n*\$"

        new_pattern2 =r'\n<img src="https://www.zhihu.com/equation?tex=\1" alt="\1" class="ee_img tr_noresize" eeimg="1">\n'

        f = open(file_name, 'r')

        f_output = open(output_file_name, 'w')

        all_lines = f.read()

        new_lines1 = re.sub(pattern1, new_pattern1, all_lines)

        new_lines2 = re.sub(pattern2, new_pattern2, new_lines1)

        f_output.write(new_lines2)

        # for line in all_lines:

        #     new_line1 = re.sub(pattern1, new_pattern1, line)

        #     new_line2 = re.sub(pattern2, new_pattern2, new_line1)

        #     f_output.write(new_line2)

        f.close()

        f_output.close()

    except Exception, e:

        print(e)

if __name__ == '__main__':

    if len(sys.argv) < 2:

        print("need file name")

        sys.exit(1)

    file_name = sys.argv[1]

    # file_name = "极大似然小结.md".decode('utf-8')

    file_name_pre = file_name.split(".")[0]

    output_file_name = file_name_pre + "_zhihu.md"

    replace(file_name, output_file_name)

    由此完成自动化配置。