字符串基本操作

s=‘星期一星期二星期三星期四星期五星期六星期天‘
d=int(input("输入1-7:"))
print(s[3*(d-1):3*d])

s=input("请输入学号：")
print("年级是：",s[0:4])
print("专业是：",s[4:6])
print("班级是：",s[6:9])
print("序号是：",s[-3:])

d=(input("请输入身份证号："))
print(‘省：‘,d[0:2])
print(‘地级市：‘,d[2:4])
print(‘县：‘,d[4:6])
print(‘出生年月日：‘,d[6:14])
print(‘顺序号：‘,d[-4:-1])
print(‘性别：‘,d[-2:-1])
print(‘校验码：‘,d[-1:])

a=‘python‘
print(len(a))

print(eval(‘20+30‘))

b="pine"
c="apple"
print(b+c)

d="pineapple!"
print(d*3)

for i in ("python"):
    print(i)

print(chr(9802))

print("red"+"\n"+"yellow"+"\t"+"green"+"\\"+"blue")

for i in range(12):
    print(chr(9800+i),end=‘/‘)