说得有理。其实用dictionary更容易，而且还可以交互式，现推出第二个改进后的脚本：

#!/usr/bin/python
import os
''' firstly,you should define a dict for assign some permission'''
permission_group={
        'manager': 'BROWSER_VIEW,CHANGESET_VIEW,CONFIG_VIEW,FILE_VIEW,LOG_VIEW,MILESTONE_ADMIN,MILESTONE_CREATE,MILESTONE_DELETE,MILESTONE_MODIFY,MILESTONE_VIEW,REPORT_ADMIN,REPORT_CREATE,REPORT_DELETE,REPORT_MODIFY,REPORT_SQL_VIEW,REPORT_VIEW,ROADMAP_ADMIN,ROADMAP_VIEW,SEARCH_VIEW,TICKET_ADMIN,TICKET_APPEND,TICKET_CHGPROP,TICKET_CREATE,TICKET_MODIFY,TICKET_VIEW,TIMELINE_VIEW,TRAC_ADMIN,WIKI_ADMIN,WIKI_CREATE,WIKI_DELETE,WIKI_MODIFY,WIKI_VIEW',
        'developer': '',
        'anonymous': 'BROWSER_VIEW,LOG_VIEW,FILE_VIEW,CHANGESET_VIEW,TICKET_VIEW,MILESTONE_VIEW,ROADMAP_VIEW,REPORT_VIEW,WIKI_VIEW,TIMELINE_VIEW,SEARCH_VIEW',
}

''' then you should define some person '''
person={
        'team1': 'alexxu,arielgu,ericgao,geminisshao,thunderzhang,junzhao,rogersong,johnshen,jackytian,sanzhong,yitangcheng',
        'team2': '',
}

''' main '''
for name,item in person.items():
        if item == '': continue
        print 'The <<< %s >>> contains %s \n' %(name,item)

team=raw_input('choose team which your want to do?      ')

for name,item in permission_group.items():
        if item == '':continue
        print 'The <<< %s >>> permission is :\n %s\n' %(name,item)

group=raw_input('What permission do you want to do?     ')

for permit in permission_group[group].split(','):
        print '%s -- %s ' %(group,permit)
        command = 'trac-admin /var/trac permission add %s %s' %(group,permit)
        if os.system(command) == 0:
                print command,' Success'
        else:
                print command,'Failed'

for pers in person[team].split(','):
        print '%s -- %s ' %(pers,group)
        command='trac-admin /var/trac permission add %s %s' %(pers,group)
        if os.system(command) == 0:
                print command,' Success'
        else:
                print command,'Failed'


-----原始邮件-----
发件人: python-chinese-bounces at lists.python.cn
[mailto:python-chinese-bounces at lists.python.cn]代表 limodou
发送时间: 2006年3月31日 13:47
收件人: python-chinese at lists.python.cn
主题: Re: [python-chinese] 关于使用python编写一个trac权限的小脚本，希望
能改进


On 3/31/06, GeminisShao at viatech.com.cn <GeminisShao at viatech.com.cn> wrote:
>
> 因为在trac中只能使用trac-admin命令一个个提交权限，很麻烦，所以就想写一个脚本来搞定它，如果是在以前，我就会用shell来做，现在我想用python来锻练一下：
>
> trac-access-file content as follow:
> permission_all =
> BROWSER_VIEW,CHANGESET_VIEW,CONFIG_VIEW,FILE_VIEW,LOG_VIEW,MILESTONE_ADMIN,MILESTONE_CREATE,MILESTONE_DELETE,MILESTONE_MODIFY,MILESTONE_VIEW,REPORT_ADMIN,REPORT_CREATE,REPORT_DELETE,REPORT_MODIFY,REPORT_SQL_VIEW,REPORT_VIEW,ROADMAP_ADMIN,ROADMAP_VIEW,SEARCH_VIEW,TICKET_ADMIN,TICKET_APPEND,TICKET_CHGPROP,TICKET_CREATE,TICKET_MODIFY,TICKET_VIEW,TIMELINE_VIEW,TRAC_ADMIN,WIKI_ADMIN,WIKI_CREATE,WIKI_DELETE,WIKI_MODIFY,WIKI_VIEW
>
> team_all =
> alexxu,arielgu,ericgao,geminisshao,thunderzhang,junzhao,rogersong,johnshen,jackytian,sanzhong,yitangcheng
>
> permission_allow =
> BROWSER_VIEW,LOG_VIEW,FILE_VIEW,CHANGESET_VIEW,TICKET_VIEW,MILESTONE_VIEW,ROADMAP_VIEW,REPORT_VIEW,WIKI_VIEW,TIMELINE_VIEW,SEARCH_VIEW
>
>
> 我已经编写了一个脚本permission.py：
>
> #!/usr/bin/python
> import os
> f = open("/etc/apache2/trac-access-file","r");
> str = f.read()
> for line in str.split('\n'):
>         if line == '':
>                 continue
>
>         elif line[0:8] == 'team_all':
>                 for unit in line[11:].split(','):
>                         command= "trac-admin /var/trac permission add %s
> team_all anonymous " %(unit)
>                         if os.system(command) == 0:
>                                 print command,' Success'
>                         else:
>                                 print command,'Failed'
>                 continue
>
>         elif line[0:16] == 'permission_allow':
>                 for unit in line[19:].split(','):
>                         command= "trac-admin /var/trac permission add
> team_all %s" %(unit)
>                         command2= "trac-admin /var/trac permission add
> anonymous %s" %(unit)
>                         if os.system(command) == 0 or
> os.system(command2)==0:
>                                 print command,' Success'
>                         else:
>                                 print command,'Failed'
>                 continue
>
>         elif line[0:14] == 'permission_all':
>                 for unit in line[17:].split(','):
>                         command= "trac-admin /var/trac permission remove
> anonymous %s" %(unit)
>                         if os.system(command) == 0:
>                                 print command,' Success'
>                         else:
>                                 print command,'Failed'
>                 continue
>
> 我这个脚本只能算个简单的工作脚本而已，肯定会有高人能提出改进的意见，请不吝赐教，给思路也行。谢谢
>

不错。就是取名字的时候你使用定长。比较好的方式是使用splite('=',
1)来处理，这样按=进行拆分。然后再去掉首尾空格就好了。使用定长的话一旦前面的串名发生变化，改动就比较多，而且不通用。

另外权限可以与用户分开，这样互不影响。另外还可以有两种工作模式，一种是预设好的，即有哪些组，有哪些权限。一种是运行后再修改，这样可以提供一个交互环境。

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