Python学习

#!/usr/bin/python
#coding=gb2312 

sar="backer";
print sar;#backer
print sar+'cok';#backercok
print sar;#backer
print sar*3; #backerbackerbacker
sar='z'+sar[1:];
print sar; #zacker
print sar.find('ck');#2
print sar.find('lt');#-1
print sar.find('za')#0
print sar.find('z');#0
print sar.replace('ke', 'caonima');
print sar;