CDay−5 Python 初体验和原始需求

1.判断一年是否为闰年

def is_leap_year(year):
    if year%400==0 or (year%4==0 and year%100!=0):
        print "leap year"
    else:
        print "not leap year"

year = int(raw_input("input the year:"))
is_leap_year(year)

2.找出0~100内的素有素数

from math import sqrt
def is_prime(num):
    for i in range(2,int(sqrt(num))+1):
        if num%i == 0:
            return 0
    return 1

def find_prime():
    for i in range(1,101):
        if is_prime(i)==1:
            print i

find_prime()