1.a//b 意思是a整除b
2.叠边形
import turtle
turtle.setup(500,500)
turtle.pensize(5)
for i in range(9):
turtle.fd(100)
for i in range(365):
if i % 7 in [6,0]:
dayup=dayup*(1-dayfactor)
else:
dayup=dayup*(1+dayfactor)
2.叠边形
import turtle
turtle.setup(500,500)
turtle.pensize(5)
for i in range(9):
turtle.fd(100)
turtle.right(80)
“天天向上的力量”第三问
#DayDayUpQ3.py
dayup=1.0
dayfactor=0.01for i in range(365):
if i % 7 in [6,0]:
dayup=dayup*(1-dayfactor)
else:
dayup=dayup*(1+dayfactor)
print("工作日的力量：{:.2f}".format(dayup))
星号三角形：
N=eval(input())
for i in range(N+1):
if i % 2!=0:
print(('*'.center(i,'*')).center(N,' '))
凯撒加密：
#HomeWork3-5
icode=input()
L=len(icode)
for i in range(L):
if icode[i]==' ':
print(' ',end='')
elif icode[i] in ['x','y','z']:
print(chr(ord(icode[i])-23),end='')
else:
print(chr(ord(icode[i])+3),end='')
