①s[:4] ②s[-5:-1] ③s[:2]+s[3]*2 ④s[0:2]+s[3:5]
print("雨停")
elif t>25:
print("小雨")
else:
elif t>50:
s1="today"
s2=""
for c in s1:
s2=c+s2
print(s2)
x=0
for i in range(1,11,2):
x+=i
print(x)
s="Good-Luck-2023!"
n=0;m=0;k=0
for i in range(len(s)):
ch=s[i]
if ch>="0" and ch<="9":
m=m+1
elif ch>="a" and ch<="z":
n=n+1
else:
k=k+1
a= int(input("请输入整数a:"))
b= int(input("请输入整数b:"))
s=0
for i in ① :
if ② :
s=s+i
print("[" ,a, b,"]区间内的奇数和为:",s)
程序中划线①处应填入的代码为
程序中划线②处应填入的代码为
count = 0
for i in range(100,991,10) :
a=i//100
b= ①
if a==3 or b==3 :
②
print(i)
print("符合条件的数共有:",count,"个")
s=input("请输入一串整数,以逗号间隔开来:")
t=""
sum=0
if i!=", ":
sum=sum+int(t)
print("该数据序列的和为:",sum)