python练习题-1

1、输出正方形

x=input("请输入：")
x=int(x)
for i in range(0,x):
    if (i==0) or (i==x-1):
        print("**"*x)
    else:
        print("*","  "*(x-2),"*")

2、判断闰年

year = input("请输入年份：")
year=int(year)
if (year % 4 == 0 ) and (year % 100 != 0) or (year % 400 == 0):
    print(year,"是闰年")
else:
    print(year,"是平年")

3、摄氏度转华氏度

C=float(input("请输入摄氏度："))
F=1.8 * C + 32
print('{} 摄氏度={} 华氏度'.format(C,F))

4、计算圆的周长和面积

radius=float(input("请输入半径："))
perimeter=3.14*2*radius
area=3.14*radius**2
print("半径为%f，周长为%f,面积为%f"%(radius,perimeter,area))

5、判断水仙花数

number = input("请输入数字：")
if len(number)>3:
    print("!err")
else:
    bai= int(number[0])
    shi = int(number[1])
    ge = int(number[2])
    if bai**3+shi**3+ge**3==int(number):
        print("水仙花数")
    else:
        print("不是")