+In ‘Python‘+‘Quant‘Out ‘PythonQuant‘
*In ‘Python‘*3Out ‘PythonPythonPython‘
%In ‘%s,很棒！‘%（‘python’）Out ‘python,很棒！‘
字符串操作
原文：https://www.cnblogs.com/jackie-ding/p/14408694.html
