Fix doc.count_by functionality (#3950)

Fix doc.count_by functionality

bin/train_word_vectors.py

@@ -5,7 +5,6 @@ import logging
 from pathlib import Path
 from collections import defaultdict
 from gensim.models import Word2Vec
-from preshed.counter import PreshCounter
 import plac
 import spacy
 

spacy/tests/regression/test_issue3869.py

@@ -0,0 +1,31 @@
+# coding: utf8
+from __future__ import unicode_literals
+
+import pytest
+
+from spacy.attrs import IS_ALPHA
+from spacy.lang.en import English
+
+
+@pytest.mark.parametrize(
+    "sentence",
+    [
+        'The story was to the effect that a young American student recently called on Professor Christlieb with a letter of introduction.',
+        'The next month Barry Siddall joined Stoke City on a free transfer, after Chris Pearce had established himself as the Vale\'s #1.',
+        'The next month Barry Siddall joined Stoke City on a free transfer, after Chris Pearce had established himself as the Vale\'s number one',
+        'Indeed, making the one who remains do all the work has installed him into a position of such insolent tyranny, it will take a month at least to reduce him to his proper proportions.',
+        "It was a missed assignment, but it shouldn't have resulted in a turnover ..."
+    ],
+)
+def test_issue3869(sentence):
+    """Test that the Doc's count_by function works consistently"""
+    nlp = English()
+    doc = nlp(sentence)
+
+    count = 0
+    for token in doc:
+        count += token.is_alpha
+
+    assert count == doc.count_by(IS_ALPHA).get(1, 0)
+
+

spacy/tokens/doc.pxd

@@ -1,6 +1,5 @@
 from cymem.cymem cimport Pool
 cimport numpy as np
-from preshed.counter cimport PreshCounter
 
 from ..vocab cimport Vocab
 from ..structs cimport TokenC, LexemeC

spacy/tokens/doc.pyx

@@ -9,6 +9,7 @@ cimport cython
 cimport numpy as np
 from libc.string cimport memcpy, memset
 from libc.math cimport sqrt
+from collections import Counter
 
 import numpy
 import numpy.linalg
@@ -697,7 +698,7 @@ cdef class Doc:
         # Handle 1d case
         return output if len(attr_ids) >= 2 else output.reshape((self.length,))
 
-    def count_by(self, attr_id_t attr_id, exclude=None, PreshCounter counts=None):
+    def count_by(self, attr_id_t attr_id, exclude=None, object counts=None):
         """Count the frequencies of a given attribute. Produces a dict of
         `{attribute (int): count (ints)}` frequencies, keyed by the values of
         the given attribute ID.
@@ -712,19 +713,18 @@ cdef class Doc:
         cdef size_t count
 
         if counts is None:
-            counts = PreshCounter()
+            counts = Counter()
             output_dict = True
         else:
             output_dict = False
         # Take this check out of the loop, for a bit of extra speed
         if exclude is None:
             for i in range(self.length):
-                counts.inc(get_token_attr(&self.c[i], attr_id), 1)
+                counts[get_token_attr(&self.c[i], attr_id)] += 1
         else:
             for i in range(self.length):
                 if not exclude(self[i]):
-                    attr = get_token_attr(&self.c[i], attr_id)
-                    counts.inc(attr, 1)
+                    counts[get_token_attr(&self.c[i], attr_id)] += 1
         if output_dict:
             return dict(counts)