①s1 in s;②s. find(s1)!= -1;③s. index(s1)>=1;④s1. rfind(s)!= -1;⑤s. rindex(s1)>=1

s= “The python language is a cross platform language."

print(s .find(' language' ,30))

print(s[0:].upper())

上述代码的输出结果是 (　　)

s1.replace('scripting,' general')

print(s1)

s="Alice"

print(s[::-1])

上述代码的输出结果是(　　)。

print(s[-5:])的结果是(　　)

>>>x="Happy Birthday to you!"

>>>x*3

s2＝s1.replace('scripting','general') 

print(s2) 

a ="Python"

b =“A Superlanguage"

print("{:->10}:{:-19}".format(a,b))

weekid = 3

print(weekstr[weekid*3: weekid*3+3])

str1 = "mysqlsqlserverPostzresQL"

str2 ="sql"

ncount= str1.count(str2)

print(ncount)