string
可以通过printf输出
12string str = "abcd";printf("%s\n",str.c_str())
It can use operator ‘+’ to add two string variable
12stirng str1 = "abc", str2 = ...
A simple example
the default log of level is WARNING123import logginglogging.warning('Watch out!') # will print a message to the consolelogging.info( ...