python关于数组的操作

g="This is my first time to do this"

a=g.find("mys") #找到则返回位置，找不到则返回-1

b =g.count("sm") #数一下“SM”出现的个数，没有为0

c =g.index("ts")#返回ts的下标，没有的话会报错

m = (ord("a")) #获取字符的ascii码

s=input("Enter a line: ")

print("The number of words in the line are %d"% (len(s.split(" ")))) #通过空格分开来