human
Solve the following python programming problem given the following code:
def create_deprecated_class(name, new_class, clsdict = None, warn_category = ScrapyDeprecationWarning, warn_once = True, old_class_path = None, new_class_path = None, subclass_warn_message = '{cls} inherits from deprecated class {old}, please inherit from {new}.', instance_warn_message = '{cls} is deprecated, instantiate {new} instead.') : 
    '
    Return a "deprecated" class that causes its subclasses to issue a warning.
    Subclasses of ``new_class`` are considered subclasses of this class.
    It also warns when the deprecated class is instantiated, but do not when
    its subclasses are instantiated.

    It can be used to rename a base class in a library. For example, if we
    have

        class OldName(SomeClass):
            # ...

    and we want to rename it to NewName, we can do the following::

        class NewName(SomeClass):
            # ...

        OldName = create_deprecated_class(\'OldName\', NewName)

    Then, if user class inherits from OldName, warning is issued. Also, if
    some code uses ``issubclass(sub, OldName)`` or ``isinstance(sub(), OldName)``
    checks they\'ll still return True if sub is a subclass of NewName instead of
    OldName.
    ' 
    class DeprecatedClass (new_class.__class__) : 
        deprecated_class = None 
        warned_on_subclass = False 
        def __new__(metacls, name, bases, clsdict_) : 
            cls = super (DeprecatedClass, metacls).__new__ (metacls, name, bases, clsdict_) 
            if (metacls.deprecated_class is None) : 
                metacls.deprecated_class = cls 
return cls 
def __init__(cls, name, bases, clsdict_) : 
            meta = cls.__class__ 
            old = meta.deprecated_class 
            if ((old in bases) and (not (warn_once and meta.warned_on_subclass))) : 
                meta.warned_on_subclass = True 
                msg = subclass_warn_message.format (cls = _clspath (cls), old = _clspath (old, old_class_path), new = _clspath (new_class, new_class_path)) 
                if warn_once : 
                    msg...

    
    

    Fix the buggy line: if (clsdict is not None) :
assistant
#Here is Python program to fix the buggy line: if (clsdict is not None) :
.

if (parent_module is not None) :