操作环境：Python版本，2.7.13；PyCharm版本，2017.1；电脑：Win 10 1703

1. 打印三角形

分为三角形，倒三角形和等腰三角形

#coding:utf-8

rows = int(raw_input("please input a number:"))
i = j = k = 1
print "直角三角形"
for i in range(0,rows):
    for k in range(0,i + 1):
        print "*",
        k += 1
    i += 1
    print "\n"

rows = int(raw_input("please input a number:"))
print "直角三角形"
for i in range(0,rows):
    for k in range(0,rows - i):
        print "*",
        k += 1
    i += 1
    print "\n"

print '等腰三角形'
for i in range(0,rows + 1):
    for j in range(0,rows - i):
        print " ",
        j += 1
    for k in range(0,2 * i - 1):
        print "*",
        k += 1
    print "\n"
    i += 1

2. 求1000以内的完全数有哪些

#coding:utf-8

list_num = []

num = 1000

for i in range(1,num + 1):
    if sum([a for a in range(1,i) if i % a == 0]) == i:
        list_num.append(i)
        print i
print list_num

** 3. 打印万年历**

#coding:utf-8
#打印万年历
#1.判断是否为闰年
#2.计算每种情况下，每个月份的天数
#3.由2计算每年的天数
#4.计算每月一日对应的星期，基于1990年1月1日是星期一

class Wannianli():

    year = int(raw_input("请输入查询的年份（如:2010）："))
    month = int(raw_input("请输入查询的月份（如：3）："))

    def _init_(self, year, month):
        self.year = year
        self.month = month

    def is_or_not_leap_year(self):
        if self.year % 4 == 0 and self.year % 100 == 0 or self.year % 400 == 0:
            return True
        else:
            return False

    def days_of_the_month(self):
        big_m = [a for a in range(1,8) if a % 2 != 0] + [a for a in range(8,13) if a % 2 ==0]
        small_m = [4, 6, 9, 11]
        if self.month in big_m:
            return 31
        elif self.month in small_m:
            return 30
        elif self.is_or_not_leap_year():
            return 29
        else:
            return 28

    def days_between_19900101(self):
        sum_days = 0
        for y in range(1990, self.year + 1):
            if self.is_or_not_leap_year():
                sum_days += 366
            else:
                sum_days += 365
        for m in range(1, self.month):
            sum_days += self.days_of_the_month()
        return sum_days

    def the_firstday_of_month(self):
        first_of_day = 1 + self.days_between_19900101() % 7
        return first_of_day

    def print_wnl(self):
        print str(self.year) + " " + str(self.month)
        print "   "'星期一'"     " '星期二'"     "'星期三'"     "'星期四'"     "'星期五'"     "'星期六'"     "'星期日'
        f = self.the_firstday_of_month()
#        print '     *     ' * (f - 1)
        for p in range(1, self.days_of_the_month() + 1):
            if f % 7 !=0:
                if len(str(p)) == 1:
                    print '  ',
                    print '    ' + str(p),
                    print '    ',
                else:
                    print '   ',
                    print '   ' + str(p),
                    print '   ',
            else:
                print '   '
                print  '   ' + str(p),
            f = f + 1

if __name__ == '__main__':
    WNL = Wannianli()
    WNL.print_wnl()

调试信息.png