Python小练习

2022/04/04 18:41:33

Python小练习

1.绘制一条蟒蛇

#snake.py
from turtle import *
setup(0.8, 0.8, 0, 0)
penup()
fd(-250)
pendown()
pensize(25)
pencolor("blue")
seth(-40)
for i in range(3):
    circle(40, 80)
    circle(-40, 80)
circle(40, 80/2)
fd(40)
circle(16, 180)
fd(40 * 2/3)

2.同心圆

from turtle import *
a = 10
pencolor("red")
for i in range(0, 5):
    penup()
    goto(0, -10 * i)
    pendown()
    circle(a)
    a += 10
hideturtle()
done()

3.九九乘法表

# 3.九九乘法表
print("3.九九乘法表".center(20, '-'))
for i in range(1, 10):
    for j in range(1, i+1):
        print("{}*{}={:2}".format(j, i, i*j), end=' ')
    print(' ')

4.1-10的阶乘之和

#计算1-10的阶乘之和
sum,tmp=0,1
for i in range(1,11):
    tmp*=i
    sum+=tmp
print("运算结果是：{}".format(sum))

5.1-N求和

#2.整序列求和
print("2.整数序列求和".center(20,'-'))
n=eval(input("请输入正整数N："))
sum=0
for i in range (int(n)):
    sum+=i+1
print("Sum={}".format(sum))
print('-'*40)

6.BMI健康指数

height=weight=0.0
g,z="",""
height,weight= eval(input('\r请输入您的身高(m),体重(kg)[用逗号间隔,身高体重都不可为0]:'))
BMI  = float(float(weight)/(float(height)**2))
if BMI <18.5:
   g=z="偏瘦"
elif 18.5<= BMI<24:  
   g=z="正常"
elif 24<= BMI<25:   
   g,z="正常","偏胖"
elif 25<= BMI <28:    
   g=z="偏胖"
elif 28<=BMI <30:
    g,z="偏胖","肥胖"
else:
    g=z="肥胖" 
print("您的BMI测试结果:\n\tBMI指数：{:.2f}\n\t国际：{}\n\t中国：{}".format(BMI,g,z))

7.五角星的绘制

from turtle import *
fillcolor("red")
begin_fill()
while True:
    forward(200)
    right(144)
    if abs(pos())<1:
        break
end_fill()