字符串基本操作

w=‘星期一星期二星期三星期四星期五星期六星期日‘
y=eval(input(‘输入1-7:‘))
print(w[3*(y-1):3*y])

s=input(‘请输入学号：‘)
print(‘年级：‘+s[0:3])
print(‘专业：‘+s[3:5])
print(‘班级：‘+s[5:7])
print(‘序号：‘+s[-3:])

a=input(‘请输入身份证号‘)
print(‘地区:‘+a[0:6])
print(‘年龄:‘,2017-int(a[6:10]))
print(‘性别‘+a[-2:])

print(eval(‘2+3‘)) 

s = "welcome to python!"
print(len(s)) 

a = ‘he‘
b = ‘llo‘
print(a+b)    

c = ‘fighting!‘
print(c*3)  

print(‘python‘ in s)  

for i in (‘turtle‘):
    print(i)

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