Python语言程序设计基础（1）—— 程序设计基本方法

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 math
radius = 25
area = math.pi*radius*radius
print(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 = 1,1
while a < 1000 :
    print(a,end=',')
    a, b = b,a+b
print("")

同心圆

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

日期与时间

from datetime import datetime
now = 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=0
for i in range(int(n)+1):
    sum+=i
print(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 = 0
tmp = 1
for i in range(1,int(n)+1):
    sum+=tmp
    tmp*=(i+1)
print(sum)

猴子吃桃

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