python连接两个字符串的另外两种高效率的方法

#_*_ coding:utf-8 _*_ import string a='python is nice' b='mengtianwxs is a good boy' print a[:6]+' and '+b[:11] #output python and mengtianwxs print ('%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 #_*_ coding:utf-8 _*_ import string a='python i