Python中的rfind()方法使用详解

str.rfind(str, beg=0 end=len(string))

#!/usr/bin/python

str = "this is really a string example....wow!!!";
str = "is";

print str.rfind(str);
print str.rfind(str, 0, 10);
print str.rfind(str, 10, 0);

print str.find(str);
print str.find(str, 0, 10);
print str.find(str, 10, 0);

5
5
-1
2
2
-1