final.python基础习题

给定一个五位数，求输出每一位数字

for循环写法

num = int(input("enter a number: "))

for i in range(5):
    baseline = 10**(4-i)
    x = num // baseline
    print(x)
    num = num - (x * baseline)

while循环写法

num = int(input("enter a number: "))
baseline = 10000

while baseline:
    x = num // baseline
    print(x)
    num = num - (x * baseline)
    baseline //= 10

打印N边长的正方形：

n = 5

for i in range(n):
    if n == 1:
        break
    elif i == n-1 or i == 0:
        print("*" * n)
    else:
        print("*" + " "*(n-2) + "*")

求指定范围以内的质数

n = 100
for i in range(3, n, 2):
    for j in range(3, i):
        if i % j == 0:
            break
    else:
        print(i)