fixed anomalous backslash in string

attic/concurrency/charfinder/charfinder.py

@@ -63,9 +63,9 @@ import warnings
 import itertools
 from collections import namedtuple
 
-RE_WORD = re.compile('\w+')
+RE_WORD = re.compile(r'\w+')
 RE_UNICODE_NAME = re.compile('^[A-Z0-9 -]+$')
-RE_CODEPOINT = re.compile('U\+([0-9A-F]{4,6})')
+RE_CODEPOINT = re.compile(r'U\+([0-9A-F]{4,6})')
 
 INDEX_NAME = 'charfinder_index.pickle'
 MINIMUM_SAVE_LEN = 10000

attic/dicts/index_alex.py

@@ -8,7 +8,7 @@
 import sys
 import re
 
-NONWORD_RE = re.compile('\W+')
+NONWORD_RE = re.compile(r'\W+')
 
 idx = {}
 with open(sys.argv[1], encoding='utf-8') as fp:

attic/sequences/sentence_slice.py

@@ -6,9 +6,9 @@ import re
 import reprlib
 
 
-RE_TOKEN = re.compile('\w+|\s+|[^\w\s]+')
+RE_TOKEN = re.compile(r'\w+|\s+|[^\w\s]+')
 RE_WORD = re.compile('\w+')
-RE_PUNCTUATION = re.compile('[^\w\s]+')
+RE_PUNCTUATION = re.compile(r'[^\w\s]+')
 
 
 class SentenceSlice: