unittest "ResourceWarning: unclosed

将代码封装，并使用unittest调用时，返回如下警告： C:\python3.6\lib\collections\__init__.py:431: ResourceWarning: unclosed <socket.socket fd=864, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('

>>阅读原文<<