ddd

cx1.py参考代码：
#encoding=utf-8
from random import  *
Passtr="0123456789abcdefghijklmnopqrstuvwxyz"
def code(str):   #生成6位密码
    Pas=""
    for i in range(6):
        Pas += str[randint(0, len(str) - 1)]
    return Pas

#循环判定密码输入的正确与否
Pas=code(Passtr)
print(Pas)
for Count in range(1,4):
    Guess=input("输入猜的密码：")
    if Guess==Pas:
        print("密码正确")
        break
    else:
        print("密码错误，你还有{}次机会".format(3-Count))
print("游戏结束！")

cx2.py参考代码：
import random
def Pzc(n):
    if n%3==0:
        return 1
    else:
        return 0
def Lst(n):
    ss=[random.randint(0,100) for i in range(n)]
    return ss
def main():
    B=[]
    A=Lst(15)
    print("随机生成的列表A为：",A)
    for m in A:
        if Pzc(m)==1:
            B.append(m)
    B.sort()
    print("A列表中有{}个数能被3整除,分别是{}：".format(len(B),B))

main()

cx3.prg参考代码：
def addlist(n):
    sum=0
    for i in n:
        sum=sum+i
    return sum

List=[1,3,8,9,5,6]
jieguo=addlist(List)
print(jieguo)
fp= open('t1.txt',mode='w+')
fp.write(str(jieguo))
fp.close()

cx4.prg参考代码：
import random
def prime(n):
    flag=True
    for i in range(2,n):
        if n%i==0:
            flag=False
            return 0
            break
    else:
       return 1     

def lt(m):
    ls=[random.randint(1,200) for i in range(m)]
    return ls


ls=lt(12)
print("随机生成的列表为:",ls)
print("素数有：",end="")
s=0
for i in ls:
    if prime(i)==1:
        print(i,end="  ")
        s=s+i
print("\n素数和为：",s)


cx5.prg参考代码：
import random
all_chars = '0123456789'
user_name = ['user0','user1','user2','user3','user4','user5']
user_pwd_dict = {}
for name in user_name:
    pwd = ''
    for i in range(6):
        pwd += random.choice(all_chars)
    user_pwd_dict[name] = pwd
print("已分配初始密码，字典数据为:",user_pwd_dict)

fid = open('user_inf.txt','wt')
for name,pwd in user_pwd_dict.items():
    fid.write(name + ':' + pwd + '\n')
fid.close()
print("用户名和密码已存至user_inf.txt中！")

cx6.prg参考代码：
x=eval(input('请输入x:'))
print('x={}'.format(x))
def fact(n):
    s=1
    for i in range(1,n+1):
        s=s*i
    return s
sum=1
i=1
while True:
    sum=sum+(x**(i))/fact(i)
    if (x**(i))/fact(i)<1e-6:
        break
    i=i+1
print('e的{}次幂为：{}'.format(x,sum))

cx7.prg参考代码：
def GetTxt(file):
    op=open(file,"r")
    txt=op.readlines()
    return txt
def TxtD(lstr):
    luser=[]
    for line in lstr:
        line = line.replace("\n", "")
        lp = line.split(":")
        luser.append(tuple(lp))
    MyDict=dict(luser)
    return(MyDict)
ftxt=GetTxt("data.txt")
MD=TxtD(ftxt)
user_name = input("请输入用户名：")
password = input("请输入密码：")
if user_name not in MD:
    print("用户名输入不正确")
elif password != MD[user_name]:
    print("密码输入如错误")
else:
    print("登录成功")

cx8.prg参考代码：
def fenci():
    x=open("c://xx.txt").read()    #注意文件地址根据实际情况决定
    m=x.split(",")
    return m
def tongji(m):
    dic={}
    for s in m:
        dic[s[0]]=dic.get(s[0],0)+1
    return dic

M=fenci()
D=tongji(M)
print("统计结果:",D)
new=list(D.items())
new.sort(key=lambda x:x[1],reverse=True)
print("排名前三的姓氏为:")
for i in range(3):
    word,count=new[i]
    print(word,count)
    
cx9.prg参考代码：
def jiami(s):
    L = []
    for i in s:
        if(i == ' '):
            L.append(i)
        else:            
            L.append(chr(ord(i) - 32 + 3)) 
        L1 = ''.join(L) #列表转换为字符
    return str(L1)

s1 = str(input("请输入待转换的英语字母："))
s2=jiami(s1)
zd = dict(zip(s1, s2))
print(zd)

cx10.prg参考代码：
# 按优秀、良好、中等、及格和不及格五个等级进行统计
def fs():
    x=open("data.txt").read()    
    ls=list(map(int,x.split(",")))
    return ls
def dj(s):
    d={}
    for i in s:
        if i>= 90:
            d['优秀']=d.get('优秀',0)+1
        elif i>= 80:
            d['良好']=d.get('良好',0)+1
        elif i>= 70:
            d['中等']=d.get('中等',0)+1
        elif i>= 60:
            d['及格']=d.get('及格',0)+1
        else:
            d['不及格']=d.get('不及格',0)+1
    return d

score = fs()
print("学生分数：",end="")
for i in score:
    print(i,end="  ")
dic=dj(score)
counts=list(dic.items())
counts.sort(key=lambda x:x[1],reverse=True)
print("\n分等级统计结果排序：")
for i in counts:
    print("{}:{}人".format(i[0],i[1]))

cx11.prg参考代码：
def is_cdata(num):
    lt = []
    for i in range(1,num):
        if num % i == 0:
            lt.append(i)
    if sum(lt) == num:
        return 1,lt
    else:
        return 0,[]
    
data = eval(input("请输入一个数:"))
flag,lt_data = is_cdata(data)
if flag == 1:
    lt_data_str = [str(ch) for ch in lt_data]
    print("是,{}={}".format(data,'+'.join(lt_data_str)))
else:
    print("不是")

cx12.prg参考代码：
import random
a=('黄盖','曹操','刘备','诸葛亮','关羽','吕布')
b= {}
b=dict.fromkeys(a)
for i in range(0,6):
    c=[]
    for j in range(0,10):
        c.append(random.randint(0,11))
    b[a[i]]=c
##文件保存
with open('score.txt','w+') as f:
    f.write(str(b))

##元素查找
name=input('请输入要查找的人：')
if name in a:
    score=b[name]
    m=max(score)
    n=min(score)
    s=(sum(score)-m-n)/(len(score)-2)
    print('歌手{}的最终得分为{}'.format(name,s))
else:
    print('你输入的歌手{}不存在！！！'.format(name))