# 日志文件操作
  假定有个gbk编码的日志文件chrom2000，该文件的格式为：首先是日志头，包含日志头：四个字节unsigned int32来表示该日志中的记录个数；接着日志记录一个接一个，直到文件末尾。每一个日志记录的格式为：记录类型，四个字节，UInt32；用户名长度，四个字节，UInt32；用户名，其长度由用户名长度决定；时间长度，四个字节，UInt32，例如时间“ 2016-12-09, 12:23"，起始有空格；信息长度，四个字节，UInt32；信息，长度由信息长度决定。
  现要编写程序对日志进行操作如，增加、删除、修改、查询、移动。
十六进制打开后显示如下：
```
00000000 5B 20 00 00 00 00 00 00 0D 00 00 00 41 64 6D 69 [ ..........Admi
00000010 6E 69 73 74 72 61 74 6F 72 12 00 00 00 20 32 30 nistrator.... 20
00000020 31 34 2D 31 30 2D 30 39 2C 20 31 31 3A 30 38 1A 14-10-09, 11:08.
00000030 00 00 00 B8 C3 D3 C3 BB A7 B5 C7 C2 BC B2 A2 BF ................
00000040 AA CA BC CA B9 D3 C3 CF B5 CD B3 A1 A3 06 00 00 ................
00000050 00 0D 00 00 00 41 64 6D 69 6E 69 73 74 72 61 74 .....Administrat
00000060 6F 72 12 00 00 00 20 32 30 31 34 2D 31 30 2D 30 or.... 2014-10-0
00000070 39 2C 20 31 31 3A 30 39 0C 00 00 00 D0 DE B8 C4 9, 11:09........
00000080 CF B5 CD B3 C5 E4 D6 C3 07 00 00 00 0D 00 00 00 ................
00000090 41 64 6D 69 6E 69 73 74 72 61 74 6F 72 12 00 00 Administrator...
000000A0 00 20 32 30 31 34 2D 31 30 2D 30 39 2C 20 31 31 . 2014-10-09, 11
000000B0 3A 31 31 10 00 00 00 D0 DE B8 C4 D2 C7 C6 F7 BF :11.............
000000C0 D8 D6 C6 B7 BD B7 A8 07 00 00 00 0D 00 00 00 41 ...............A
000000D0 64 6D 69 6E 69 73 74 72 61 74 6F 72 12 00 00 00 dministrator....
000000E0 20 32 30 31 34 2D 31 30 2D 30 39 2C 20 31 31 3A 2014-10-09, 11:
000000F0 31 31 10 00 00 00 D0 DE B8 C4 D2 C7 C6 F7 BF D8 11..............
00000100 D6 C6 B7 BD B7 A8 02 00 00 00 0D 00 00 00 41 64 ..............Ad
00000110 6D 69 6E 69 73 74 72 61 74 6F 72 12 00 00 00 20 ministrator....
00000120 32 30 31 34 2D 31 30 2D 30 39 2C 20 31 31 3A 31 2014-10-09, 11:1
00000130 31 28 00 00 00 D3 C3 BB A7 B4 E6 B4 A2 CE C4 BC 1(..............
00000140 FE 3A 20 64 65 66 61 75 6C 74 2E 2A 3A 20 2A 2E .: default.*: *.
00000150 6D 74 68 20 61 6E 64 20 2A 2E 69 66 6F 06 00 00 mth and *.ifo...
00000160 00 0D 00 00 00 41 64 6D 69 6E 69 73 74 72 61 74 .....Administrat
```
* * *
***[java版](https://github.com/JeffyLu/useless-but-powerful/tree/master/Java/%E6%97%A5%E5%BF%97%E6%96%87%E4%BB%B6%E6%93%8D%E4%BD%9C)***
little python projects, 一些小的python项目..zip
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little python projects, 一些小的python项目..zip （82个子文件） 
557sdsadasd 0001 
verification_code_generator.py 945B 0006 duote_asyncio.py 2KB duote_multithread.py 2KB duote_nothread.py 2KB 0002 counter.py 673B 0015 user_agent.py 7KB vehicle_trace_crawler.py 12KB 0016 markdown.py 5KB 0009 login.py 2KB 0013 GradeSpyder.py 6KB 0012 templates 
statistics.html 3KB health_home.html 985B base.html 3KB index.html 876B BMI.html 2KB imgtemp 
bmi.png 145KB health.png 402KB admin.png 40KB statistics.png 214KB manage.py 807B healthweb __init__.py 0B wsgi.py 396B urls.py 1KB settings.py 3KB views.py 2KB .gitignore 63B commonstatic health_home 3.png 89KB 1.png 66KB 4.png 198KB 2.png 172KB home js bootstrap.js 66KB easing.js 5KB move-top.js 1KB jquery-1.11.1.min.js 94KB css style.css 7KB flexslider.css 4KB bootstrap.css 138KB images 
banner.jpg 113KB move-up.png 471B fonts glyphicons-halflings-regular.woff 23KB glyphicons-halflings-regular.woff2 18KB README.md 2KB BMI __init__.py 0B tests.py 60B admin.py 858B migrations __init__.py 0B 0001_initial.py 2KB apps.py 81B models.py 2KB views.py 6KB forms.py 2KB 0004 MIS.py 4KB .gitignore 25B 0014 accounts_manager.py 5KB
source.txt 141B 0011 LogOperator.py 8KB chrom2000.log 806KB README.md 3KB 0007 cube3.py 1KB 0008 templates registration login.html 2KB base.html 1010B index.html 2KB manage.py 806B TodoList __init__.py 0B wsgi.py 394B urls.py 893B settings.py 3KB .gitignore 38B temp_img show.png 33KB README.md 315B mylist __init__.py 0B tests.py 60B admin.py 248B migrations __init__.py 0B apps.py 87B models.py 526B urls.py 770B views.py 2KB 0005 ReName.py 3KB README.md 1KB 0003 codestat.py 1KB 0010 youdao.py 2KB资源评论
