蓝桥杯第十届青少年Python组省赛试题

ns=[1,3,5,8]
cnt=0
for a in ns:
    for b in ns:
        for c in ns:
            if a!=b and a!=c and b!=c:
                print(a*100+b*10+c)
                cnt+=1
print(cnt)

for i in range(1,1001):
    n=str(i)
    if '3' in n:
        if '33' in n:
            n='&'+n
        t=True
        for j in range(2,i):
            if i%j==0:
                t=False        
                break
        if t:
            n=n+'*'
        print(n)

ns=list(map(int,input().split(',')))
print(len(ns))
print(min(ns))
s=''
for n in ns:
    if 1<=n<=26:
        s+=chr(64+n)
    else:
        s+='[bad]'
ns.sort(reverse=True)
ns=list(map(str,ns))
print(','.join(ns))
print(s)

import turtle,random
turtle.setup(800,600)
t=turtle.Turtle()
t.speed(7)
t.pensize(5)
t.color('black','yellow')
for i in range(5):
    x=random.randint(-400,400)
    y=random.randint(-300,300)
    t.penup()
    t.goto(x,y)
    t.pendown()
    t.begin_fill()
    l=random.randint(10,150)
    for j in range(5):
        t.forward(l)
        t.right(36*4)
    t.end_fill()

import turtle
t=turtle.Turtle()
t.left(90)
def fen(n,l):
    if n==0:
        return
    else:
        t.left(25)
        t.forward(l)
        fen(n-1,l-6)
        t.backward(l)
        t.right(50)
        t.forward(l)
        fen(n-1,l-6)
        t.backward(l)
        t.left(25)
        
fen(4,60)

import turtle,random
turtle.setup(800,600)
turtle.tracer(0)
t=turtle.Turtle()
t.left(90)
def fen(n,l,left,right):
    if n==0:
        return
    else:
        t.left(left)
        t.forward(l)
        fen(n-1,l-6,left,right)
        t.backward(l)
        t.right(left)
        t.right(right)
        t.forward(l)
        fen(n-1,l-6,left,right)
        t.backward(l)
        t.left(right)

for i in range(50):
    x=random.randint(-400,400)
    y=random.randint(-300,300)
    t.penup()
    t.goto(x,y)
    t.pendown()
    n=random.randint(4,6)
    l=random.randint(30,60)
    if x<0:
        left,right=20,-5   #偏左边时左右分支要转的角度
    else:
        left,right=-5,20   #偏左边时左右分支要转的角度
    fen(n,l,left,right)

①在py代码文件同一目录下，新建userpass.txt文件，输入账号,密码（如有中文记得文件–另存为–右下角编码UTF-8改为ANSI–保存）

②在py代码文件同一目录下，新建goods.txt文件，输入商品数据（如有中文记得文件–另存为–右下角编码UTF-8改为ANSI–保存）

001,菠萝,水果,10;002,玫瑰,鲜花,999;003,柚子,水果,20;004,榴莲,水果,30

③参考程序

import random
code=random.randint(100000,999999)
print('您的登录验证码为',code)
n=input('请输入用户名：')
pw=input('请输入密码：')
c=int(input('登录验证码：'))
is_in=True
with open('./userpass.txt','r') as f:
    s=f.read()
    name,password=s.split(',')
    if n==name and pw==password and c==code:
        is_in=True
        print('身份验证通过，欢迎登录！')
    else:
        print('身份验证失败！')
if is_in:
    with open('./goods.txt','r') as f:
        s=f.read()
        goods=s.split(';')
        for good in goods:
            print(good)
    while True:
        try:
            order=input('::')
            if order=='add':
                good_num=input('商品编号：')
                good_name=input('商品名：')
                good_type=input('商品类型：')
                good_stock=int(input('库存数量：'))
                if good_num.strip() and good_name.strip() and good_type.strip() and good_stock:
                    new_s=good_num+','+good_name+','+good_type+','+str(good_stock)
                    goods.append(new_s)
                    s=s+';'+new_s
                    with open('./goods.txt','w') as f:
                        f.write(s)
            elif order=='count':
                cnt=0
                for good in goods:
                    good_datas=good.split(',')
                    cnt+=int(good_datas[3])
                print(cnt)
            for good in goods:
                    print(good) 
        except Exception as e:
            print(e)