python
1、拓扑排序
https://blog.csdn.net/weixin_42018258/article/details/80585842
2、数组逆序
reverse()
3、dict 由value获取key
def get_key (dict, value):
return [k for k, v in dict.items() if v == value]
4、pyinstaller生成exe文件
到源代码目录下,执行命令:
pyinstaller xx.py -F
5、常用下载网址
https://www.lfd.uci.edu/~gohlke/pythonlibs/#lxml
6、库大全
https://blog.csdn.net/u010670689/article/details/51911240