Everybody in this country should learn how to program a computer,because it teaches you how to think.

　　　　　　　　　　　　　　　　　　　　　——史蒂夫~乔布斯

 

圆的面积

import mathradius = 25area = math.pi*radius*radiusprint(area)print("{:.2f}".format(area))

 

输入

name = input("输入人名：")print("{}".format(name))print("{}".format(name[0]))print("{}".format(name[1:]))

 

斐波那契

a , b = 1,1while a < 1000 :    print(a,end=',')    a, b = b,a+bprint("")

 

同心圆

import turtleturtle.pensize(2)turtle.circle(10)turtle.circle(20)

 

日期与时间

from datetime import datetimenow = datetime.now()print(now)print(now.strftime("%x"))print(now.strftime("%X"))

 

习题部分

字符串拼接

str1 = input()str2 = input()print("{} {}".format(str1,str2))

 

sum(n)

n=input()sum=0for i in range(int(n)+1):    sum+=iprint(sum)

 

9*9

for i in range(1,10):    for j in range(1,i+1):        print("{}*{}={:2}".format(j,i,j*i),end=' ')    print("")

 

1! + 2! + 3! + ... + n!

n = input()sum = 0tmp = 1for i in range(1,int(n)+1):    sum+=tmp    tmp*=(i+1)print(sum)

 

猴子吃桃

ans = 1for i in range(5):    ans = (ans + 1)*2print(ans)