| Server IP : 103.119.228.120 / Your IP : 18.191.97.133 Web Server : Apache System : Linux v8.techscape8.com 3.10.0-1160.119.1.el7.tuxcare.els2.x86_64 #1 SMP Mon Jul 15 12:09:18 UTC 2024 x86_64 User : nobody ( 99) PHP Version : 5.6.40 Disable Function : shell_exec,symlink,system,exec,proc_get_status,proc_nice,proc_terminate,define_syslog_variables,syslog,openlog,closelog,escapeshellcmd,passthru,ocinum cols,ini_alter,leak,listen,chgrp,apache_note,apache_setenv,debugger_on,debugger_off,ftp_exec,dl,dll,myshellexec,proc_open,socket_bind,proc_close,escapeshellarg,parse_ini_filepopen,fpassthru,exec,passthru,escapeshellarg,escapeshellcmd,proc_close,proc_open,ini_alter,popen,show_source,proc_nice,proc_terminate,proc_get_status,proc_close,pfsockopen,leak,apache_child_terminate,posix_kill,posix_mkfifo,posix_setpgid,posix_setsid,posix_setuid,dl,symlink,shell_exec,system,dl,passthru,escapeshellarg,escapeshellcmd,myshellexec,c99_buff_prepare,c99_sess_put,fpassthru,getdisfunc,fx29exec,fx29exec2,is_windows,disp_freespace,fx29sh_getupdate,fx29_buff_prepare,fx29_sess_put,fx29shexit,fx29fsearch,fx29ftpbrutecheck,fx29sh_tools,fx29sh_about,milw0rm,imagez,sh_name,myshellexec,checkproxyhost,dosyayicek,c99_buff_prepare,c99_sess_put,c99getsource,c99sh_getupdate,c99fsearch,c99shexit,view_perms,posix_getpwuid,posix_getgrgid,posix_kill,parse_perms,parsesort,view_perms_color,set_encoder_input,ls_setcheckboxall,ls_reverse_all,rsg_read,rsg_glob,selfURL,dispsecinfo,unix2DosTime,addFile,system,get_users,view_size,DirFiles,DirFilesWide,DirPrintHTMLHeaders,GetFilesTotal,GetTitles,GetTimeTotal,GetMatchesCount,GetFileMatchesCount,GetResultFiles,fs_copy_dir,fs_copy_obj,fs_move_dir,fs_move_obj,fs_rmdir,SearchText,getmicrotime MySQL : ON | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /lib64/python2.7/Demo/metaclasses/ |
Upload File : |
"""Generic metaclass.
XXX This is very much a work in progress.
"""
import types
class MetaMethodWrapper:
def __init__(self, func, inst):
self.func = func
self.inst = inst
self.__name__ = self.func.__name__
def __call__(self, *args, **kw):
return apply(self.func, (self.inst,) + args, kw)
class MetaHelper:
__methodwrapper__ = MetaMethodWrapper # For derived helpers to override
def __helperinit__(self, formalclass):
self.__formalclass__ = formalclass
def __getattr__(self, name):
# Invoked for any attr not in the instance's __dict__
try:
raw = self.__formalclass__.__getattr__(name)
except AttributeError:
try:
ga = self.__formalclass__.__getattr__('__usergetattr__')
except (KeyError, AttributeError):
raise AttributeError, name
return ga(self, name)
if type(raw) != types.FunctionType:
return raw
return self.__methodwrapper__(raw, self)
class MetaClass:
"""A generic metaclass.
This can be subclassed to implement various kinds of meta-behavior.
"""
__helper__ = MetaHelper # For derived metaclasses to override
__inited = 0
def __init__(self, name, bases, dict):
try:
ga = dict['__getattr__']
except KeyError:
pass
else:
dict['__usergetattr__'] = ga
del dict['__getattr__']
self.__name__ = name
self.__bases__ = bases
self.__realdict__ = dict
self.__inited = 1
def __getattr__(self, name):
try:
return self.__realdict__[name]
except KeyError:
for base in self.__bases__:
try:
return base.__getattr__(name)
except AttributeError:
pass
raise AttributeError, name
def __setattr__(self, name, value):
if not self.__inited:
self.__dict__[name] = value
else:
self.__realdict__[name] = value
def __call__(self, *args, **kw):
inst = self.__helper__()
inst.__helperinit__(self)
try:
init = inst.__getattr__('__init__')
except AttributeError:
init = lambda: None
apply(init, args, kw)
return inst
Meta = MetaClass('Meta', (), {})
def _test():
class C(Meta):
def __init__(self, *args):
print "__init__, args =", args
def m1(self, x):
print "m1(x=%r)" % (x,)
print C
x = C()
print x
x.m1(12)
class D(C):
def __getattr__(self, name):
if name[:2] == '__': raise AttributeError, name
return "getattr:%s" % name
x = D()
print x.foo
print x._foo
## print x.__foo
## print x.__foo__
if __name__ == '__main__':
_test()