Getting a vocal size of 26871 instead of 138858

[pyaj]

sentences=[]
labels=[]
random.shuffle(corpus)
for x in range(training_size):
    sentences.append(corpus[x][0])
    labels.append(corpus[x][1])


tokenizer = Tokenizer()
tokenizer.fit_on_texts(sentences)

word_index = tokenizer.word_index
vocab_size=len(word_index)

sequences = tokenizer.texts_to_sequences(sentences)
padded = pad_sequences(sequences, maxlen=max_length, padding=padding_type, truncating=trunc_type)

split = int(test_portion * training_size)

test_sequences = padded[:split]
training_sequences = padded[split:training_size]
test_labels = labels[:split]
training_labels = labels[split:training_size]

[pyaj]

I cannot pass the exam if I do not get it right

[pyaj]

The error was gone after changing a few times the training size!