IndentationError: unindent does not match any outer indentation level
解决方案：空格被打成 tab 或者格式不对
Anaconda 默认浏览器配置为 Chrome
c.NotebookApp.browser = 'open -a /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome %s'
exit(0) 和 exit(1)
- exit(1):means there was some issue / error / problem and that is why the program is exiting.
- exit(0) means a clean exit without any errors / problems