day45-python实例练习

    '''ABCD * 9 = DCBA
    通过计算机的方法，给我们计算出 A= ? B = ?  C = ? D =?
    A; 1-9
    B: 1-9
    C: 1-9
    D; 1-9
    A != B != C != D
    '''
 
例子：
class CountNumber(object):
    '''ABCD * 9 = DCBA
    通过计算机的方法，给我们计算出 A= ? B = ?  C = ? D =?
    A; 1-9
    B: 1-9
    C: 1-9
    D; 1-9
    A != B != C != D
    '''
    def __init__(self):
        print("ABCD * 9 = DCBA; A !=B !=C !=D")
    def numAdbcd(self):
        for A in range(1,10):
            for B in range(0,10):
                for C in range(0,10):
                    for D in range(0,10):
                        if (A*1000 + B*100 + C*10 + D) * 9 == (D*1000+C*100+B*10+A):
                            print("{0}{1}{2}{3} *9 = {4}{5}{6}{7}".format(A,B,C,D,D,C,B,A))
                            print("A = {0}, B = {1}, C = {2}, D = {3}".format(A, B, C, D))
def main():
    countNumber = CountNumber()
    countNumber.numAdbcd()
 
if __name__ == '__main__':
    main()

#!/usr/bin/env python
# -*- coding:utf-8 -*-
# @time: 2018/1/7 16:10
# Author: caicai
# @File: demon3.py
'''九宫格'''
 
class NinePaper(object):
    def __init__(self):
        print('''
                    _____________
                    |_A_|_B_|_C_|
                    |_D_|_E_|_F_|
                    |_G_|_H_|_I_|
                     A, B, C, D, E, F, G, H, I 必须是1-9数字，且不能重复
                    所有的行，列，对角线的和都为15
        ''')
        self.numbers = list()
        for i in range(1,10):
            self.numbers.append(i)
        print("number = {0}".format(self.numbers))
    def run(self):
        for A in range(1,10):
            l1 = list()
            l1 += self.numbers
            l1.remove(A)
            for B in l1:
                l2 = list()
                l2 += l1
                l2.remove(B)
                for C in l2:
                    l3 = list()
                    l3 += l2
                    l3.remove(C)
                    for D in l3:
                        l4 = list()
                        l4 += l3
                        l4.remove(D)
                        for E in l4:
                            l5 = list()
                            l5 += l4
                            l5.remove(E)
                            for F in l5:
                                l6 = list()
                                l6 += l5
                                l6.remove(F)
                                for G in l6:
                                    l7 = list()
                                    l7 += l6
                                    l7.remove(G)
                                    for H in l7:
                                        l8 = list()
                                        l8 += l7
                                        l8.remove(H)
                                        for I in l8:
                                            if A + B + C == D + E + F == G + H + I == A + D + G == B + E + H == C + F + I == A + E + I == C + E + G == 15:
                                                print('''
                                                        _____________
                                                        |_{0}_|_{1}_|_{2}_|
                                                        |_{3}_|_{4}_|_{5}_|
                                                        |_{6}_|_{7}_|_{8}_|
                                                            '''.format(A, B, C, D, E, F, G, H, I))
 
def main():
    ninePaper = NinePaper()
    ninePaper.run()
 
if __name__ == '__main__':
    main()

去一个passwd文件按序号大小进行排序写入新的字典
passwd文件
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
sync:x:5:0:sync:/sbin:/bin/sync
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
halt:x:7:0:halt:/sbin:/sbin/halt
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
operator:x:11:0:operator:/root:/sbin/nologin
games:x:12:100:games:/usr/games:/sbin/nologin
ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin
nobody:x:99:99:Nobody:/:/sbin/nologin
systemd-bus-proxy:x:999:997:systemd Bus Proxy:/:/sbin/nologin
systemd-network:x:192:192:systemd Network Management:/:/sbin/nologin
dbus:x:81:81:System message bus:/:/sbin/nologin
polkitd:x:998:996:User for polkitd:/:/sbin/nologin
colord:x:997:995:User for colord:/var/lib/colord:/sbin/nologin
abrt:x:173:173::/etc/abrt:/sbin/nologin
unbound:x:996:994:Unbound DNS resolver:/etc/unbound:/sbin/nologin
tss:x:59:59:Account used by the trousers package to sandbox the tcsd daemon:/dev/null:/sbin/nologin
libstoragemgmt:x:995:993:daemon account for libstoragemgmt:/var/run/lsm:/sbin/nologin
rpc:x:32:32:Rpcbind Daemon:/var/lib/rpcbind:/sbin/nologin
usbmuxd:x:113:113:usbmuxd user:/:/sbin/nologin
saslauth:x:994:76:Saslauthd user:/run/saslauthd:/sbin/nologin
geoclue:x:993:991:User for geoclue:/var/lib/geoclue:/sbin/nologin
setroubleshoot:x:992:989::/var/lib/setroubleshoot:/sbin/nologin
rtkit:x:172:172:RealtimeKit:/proc:/sbin/nologin
mysql:x:27:27:MariaDB Server:/var/lib/mysql:/sbin/nologin
qemu:x:107:107:qemu user:/:/sbin/nologin
radvd:x:75:75:radvd user:/:/sbin/nologin
chrony:x:991:988::/var/lib/chrony:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin
nfsnobody:x:65534:65534:Anonymous NFS User:/var/lib/nfs:/sbin/nologin
pulse:x:171:171:PulseAudio System Daemon:/var/run/pulse:/sbin/nologin
gdm:x:42:42::/var/lib/gdm:/sbin/nologin
gnome-initial-setup:x:990:985::/run/gnome-initial-setup/:/sbin/nologin
avahi:x:70:70:Avahi mDNS/DNS-SD Stack:/var/run/avahi-daemon:/sbin/nologin
postfix:x:89:89::/var/spool/postfix:/sbin/nologin
ntp:x:38:38::/etc/ntp:/sbin/nologin
sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin
tcpdump:x:72:72::/:/sbin/nologin
osadmin:x:1000:1000:osadmin:/home/osadmin:/bin/bash
mysql-proxy:x:989:984:MySQL-Proxy user:/:/sbin/nologin
wxp:x:1001:1001::/home/wxp:/bin/bash
nginx:x:988:983:Nginx web server:/var/lib/nginx:/sbin/nologin
uwsgi:x:987:982:uWSGI daemon user:/run/uwsgi:/sbin/nologin
 
import codecs
 
import os
 
class SortPasswd(object):
    def __init__(self):
        self.passwd = "passwd"
        self.newpasswd = "newPasswd"
        self.contextList = list()
        if not os.path.exists(self.passwd):
            print("please download passwd from linux.")
            exit(1)
        print("sort file is :{0}".format(self.passwd))
        print("sorted file is :{0}".format(self.newpasswd))
    def getContextList(self):
        with codecs.open("passwd") as fr:
            self.contextList += sorted(fr.readlines(), key=lambda line:int(line.split(":")[2]), reverse=False)
            print(self.contextList)
    def writeContextList(self):
        with codecs.open("new_passwd", "w") as fw:
            fw.writelines(self.contextList)
 
def main():
    sortpasswd = SortPasswd()
    sortpasswd.getContextList()
    sortpasswd.writeContextList()
 
if __name__ == '__main__':
    main()