在遵循gensim website上的简单gensim教程期间，我遇到了一个问题，

>>> from gensim.test.utils import common_texts,get_tmpfile
>>> from gensim.models import Word2Vec
>>>
>>> path = get_tmpfile("word2vec.model")
>>>
>>> model = Word2Vec(common_texts,size=100,window=5,min_count=1,workers=4)
>>> model.save("word2vec.model")
>>> model = Word2Vec.load("word2vec.model")
>>> model.train([["hello","world"]],total_examples=1,epochs=1)

>>> from gensim.models import KeyedVectors
>>>
>>> path = get_tmpfile("wordvectors.kv")
>>>

当我在下面尝试时，

>>> model.wv.save(path)
>>> wv = KeyedVectors.load("model.wv",mmap='r')

我遇到以下错误：

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
<ipython-input-81-eee6865b677b> in <module>
      1 path = get_tmpfile('wordvectors.kv')
      2 model.wv.save(path)
----> 3 KeyedVectors.load("model.wv",mmap='r')

/anaconda3/lib/python3.7/site-packages/gensim/models/keyedvectors.py in load(cls,fname_or_handle,**kwargs)
    210     @classmethod
    211     def load(cls,**kwargs):
--> 212         return super(BaseKeyedVectors,cls).load(fname_or_handle,**kwargs)
    213 
    214     def similarity(self,entity1,entity2):

/anaconda3/lib/python3.7/site-packages/gensim/utils.py in load(cls,fname,mmap)
    420         compress,subname = SaveLoad._adapt_by_suffix(fname)
    421 
--> 422         obj = unpickle(fname)
    423         obj._load_specials(fname,mmap,compress,subname)
    424         logger.info("loaded %s",fname)

/anaconda3/lib/python3.7/site-packages/gensim/utils.py in unpickle(fname)
   1356 
   1357     """
-> 1358     with smart_open(fname,'rb') as f:
   1359         # Because of loading from S3 load can't be used (missing readline in smart_open)
   1360         if sys.version_info > (3,0):

/anaconda3/lib/python3.7/site-packages/smart_open/smart_open_lib.py in smart_open(uri,mode,**kw)
    179         raise TypeError('mode should be a string')
    180 
--> 181     fobj = _shortcut_open(uri,**kw)
    182     if fobj is not None:
    183         return fobj

/anaconda3/lib/python3.7/site-packages/smart_open/smart_open_lib.py in _shortcut_open(uri,**kw)
    299     #
    300     if six.PY3:
--> 301         return open(parsed_uri.uri_path,buffering=buffering,**open_kwargs)
    302     elif not open_kwargs:
    303         return open(parsed_uri.uri_path,buffering=buffering)

FileNotFoundError: [Errno 2] No such file or directory: 'model.wv'

有人知道此消息的原因吗？我怎么知道我有'model.wv'文件？

提前谢谢！