python中使用反射的方法，python反射方法,import sys,

python中使用反射的方法，python反射方法,import sys,

import sys, types,newdef _get_mod(modulePath):    try:        aMod = sys.modules[modulePath]        if not isinstance(aMod, types.ModuleType):            raise KeyError    except KeyError:        # The last [''] is very important!        aMod = __import__(modulePath, globals(), locals(), [''])        sys.modules[modulePath] = aMod    return aModdef _get_func(fullFuncName):    """Retrieve a function object from a full dotted-package name."""    # Parse out the path, module, and function    lastDot = fullFuncName.rfind(u".")    funcName = fullFuncName[lastDot + 1:]    modPath = fullFuncName[:lastDot]    aMod = _get_mod(modPath)    aFunc = getattr(aMod, funcName)    # Assert that the function is a *callable* attribute.    assert callable(aFunc), u"%s is not callable." % fullFuncName    # Return a reference to the function itself,    # not the results of the function.    return aFuncdef _get_Class(fullClassName, parentClass=None):    """Load a module and retrieve a class (NOT an instance).    If the parentClass is supplied, className must be of parentClass    or a subclass of parentClass (or None is returned).    """    aClass = _get_func(fullClassName)    # Assert that the class is a subclass of parentClass.    if parentClass is not None:        if not issubclass(aClass, parentClass):            raise TypeError(u"%s is not a subclass of %s" %                            (fullClassName, parentClass))    # Return a reference to the class itself, not an instantiated object.    return aClassdef applyFuc(obj,strFunc,arrArgs):    objFunc = getattr(obj, strFunc)    return apply(objFunc,arrArgs)def getObject(fullClassName):    clazz = _get_Class(fullClassName)    return clazz()if __name__=='__main__':    aa=getObject("inetservices.services.company.Company")        bb=applyFuc(aa, "select", ['select * from ngsys2',None])    print bb