作业1

　　定义一个字符串"python的创始人是Guido",试分别打印出"Guido"，"odiuG", "ph的人uo"

s = 'python的创始人是Guido'print(s[-5:])print(s[:-6:-1])print(s[::3])

作业2

　　有字符串"你"和"最帅"，如何得到字符串"你最帅"，又如何得到字符串"你最帅最帅最帅"

s1 = '你's2 = '最帅'print (s1+s2)print(s1+s2*3)

作业3

　　像121 11 111等对称的整型数称为回文整型数,随机产生1000以内的10个整型数，打印>其中的回文整型数

import randomfor i in range(10):    x = random.randint(0,1000)        ge = x%10    shi = x//10%10    bai = x//100    qian = x//1000    if ge== shi and bai==0 and qian==0 or ge ==qian and shi == bai\ and qian != 0 or ge==bai and qian==0 and bai != 0:        print('%d是回文整型数'%x,end=" ")    print(x)

作业4

　　公鸡5文钱1只，母鸡3文钱1只，小鸡3只1文钱，用100文钱买100只鸡，可以怎么买？

for gg in range (0,20):    for mg in range (0,100//3):        for xg in range(0,100):            if mg+gg+xg ==100 and gg*5 + mg*3 + xg //3 ==100:                if xg%3 ==0:                    print('公鸡{}只，母鸡{}只，小鸡{}只'.format(gg,mg,xg))

作业5

　　使用input()读入一个字符串，统计字符串中字母的个数，和数字的个数

　　

s = input('请输入一个字符串：')sn=nn=0for i in s:    if "A"<=i<="Z"or 'a'<= i <='z':        sn+=1    elif '0'<=i <='9':        nn+=1    print('字母的个数：{}，数字的个数{}'.format(sn,nn))

作业6

　　附加:

        已知1990.1.1是星期一,用户输入一个1990后的>任意年月，计算其1号星期几

        参考命令cal 12 2018

nian=int(input ('请输入年份：'))yue=int(input('请输入月份：'))nday =0def runnian(nian):    if nian%4==0 and nian%100!=0 or nian%400==0:        return True    else:        return Falsefor i in range(1,yue):    if i ==1 or i ==3 or i ==5 or i == 7 or i ==8 or i ==10 or i ==12:        myue=31    elif i == 4 or i == 6 or i ==9 or i ==11:        myue=30    else:        if runnian(nian):            myue = 29        else:            myue=28    nday=nday+myuennday=0for x in range(1990,nian):    year=365    if runnian(x):        year =366    nnday= year+nndayzday =nnday + ndayprint(zday%7+1)