Accessing Characters and Slices in Strings

>>> daniel = "suga"   //////字符串含有和上一节一样的检索系统且使用方法相同
>>> daniel[2] 
'g' 
>>> daniel[-1] 
'a' 
>>> daniel[:3] 
'sug'
>>> mifa = ['hello',2,3]
>>> mifa[0][2] //////注意这里分成mifa[0]检索之后得到结果‘hello’字段然后检索hello[2]
'l'

index是可连锁的