python连接两个字符串的另外两种高效率的方法

#_*_ coding:utf-8 _*_import stringa='python is nice'b='mengtianwxs is a good boy'print a[:6]+' and '+b[:11]#output python and mengtianwxsprint ('%s %s' % (a,b)).upper()print ''.join((a,' ',b)).upper()#这里用了两个字符串格式化操作符来连接两个字符串#用字符串的join方法来连接#output PYTHON IS NICE MENGTIANWXS IS A GOOD BOY#output PYTHON IS NICE MENGTIANWXS IS A GOOD BOY

接着上一个例子来说明。