Jupyter平台默认开发的字体为宋体，在高分屏下视觉效果差
在 C:\User\用户名\.jupyter\custom下面的custom.css中，修改字体
PS:如果没有这些文件，或者没有custom这个文件夹，可以手动建立这些文件
在custom.css文本中，添加下面内容：
div.notebook {font-family: Consolas, "Microsoft YaHei Mono", "Microsoft YaHei";}
div.CodeMirror pre {font-family: Consolas, "Microsoft YaHei Mono", "Microsoft YaHei"; font-size: 10pt;}
div.output_area pre {font-family: Consolas, "Microsoft YaHei Mono", "Microsoft YaHei"; font-size: 10pt;}
div.input_prompt {font-family: Consolas, "Microsoft YaHei Mono", "Microsoft YaHei"; font-size: 10pt;}
div.out_prompt_overlay {font-family: Consolas, "Microsoft YaHei Mono", "Microsoft YaHei"; font-size: 10pt;}
div.prompt {font-family: Consolas, "Microsoft YaHei Mono", "Microsoft YaHei"; font-size: 10pt;}
span.cm-comment {font-family: Consolas, "Microsoft YaHei Mono", "Microsoft YaHei" !important; font-style:normal !important;}
code {font-family: Consolas, "Microsoft YaHei Mono", "Microsoft YaHei";}