word2vec.doesnt_match numpy vstack deprecation warning

[atunanggara]

Problem description

I followed this instruction to load GloVe model. When I run: model.doesnt_match("breakfast cereal dinner lunch".split()) from the tutorial, it produces FutureWarning on the vstack function. It seems that I am not the first person to encounter this error as well. It might also be similar to Issue 2432. The error reads:

C:\Path_to_gensim\keyedvectors.py:877: FutureWarning: arrays to stack must be passed as a "sequence" type such as list or tuple. Support for non-sequence iterables such as generators is deprecated as of NumPy 1.16 and will raise an error in the future.
vectors = vstack(self.word_vec(word, use_norm=True) for word in used_words).astype(REAL)

Steps/code/corpus to reproduce

from gensim.test.utils import datapath, get_tmpfile  
from gensim.models import KeyedVectors  
from gensim.scripts.glove2word2vec import glove2word2vec  

glove_file = datapath('test_glove.txt')  
tmp_file = get_tmpfile("test_word2vec.txt")  
_ = glove2word2vec(glove_file, tmp_file)  
model = KeyedVectors.load_word2vec_format(tmp_file)  
model.doesnt_match("breakfast cereal dinner lunch".split())

Versions

Windows-10-10.0.17763-SP0   
python 3.8.2   (tags/v3.8.2:7b3ab59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)]   
Bits 64   
NumPy 1.19.0   
SciPy 1.5.2   
gensim 3.8.3   
FAST_VERSION 0

[gojomo]

In general, you don't have to worry about such DeprecationWarning messages - they don't affect functionality, and will be fixed when the functionality breaks.

But, in this case the code has already been fixed to avoid passing a generator to vstack – before, after – so the warning against this usage won't appear when using the next gensim release (4.0.0).