Fixed a few regex warnings

readability/debug.py

@@ -41,7 +41,7 @@ def describe(node, depth=1):
     return parent + describe_node(node)
 
 
-RE_COLLAPSE_WHITESPACES = re.compile('\s+', re.U)
+RE_COLLAPSE_WHITESPACES = re.compile(r'\s+', re.U)
 
 
 def text_content(elem, length=40):

readability/encoding.py

@@ -51,7 +51,7 @@ def get_encoding(page):
 
     # Fallback to chardet if declared encodings fail
     # Remove all HTML tags, and leave only text for chardet
-    text = re.sub(b'(\s*</?[^>]*>)+\s*', b' ', page).strip()
+    text = re.sub(br'(\s*</?[^>]*>)+\s*', b' ', page).strip()
     enc = 'utf-8'
     if len(text) < 10:
         return enc # can't guess

readability/readability.py

@@ -23,17 +23,17 @@ from .debug import describe, text_content
 log = logging.getLogger("readability.readability")
 
 REGEXES = {
-    'unlikelyCandidatesRe': re.compile('combx|comment|community|disqus|extra|foot|header|menu|remark|rss|shoutbox|sidebar|sponsor|ad-break|agegate|pagination|pager|popup|tweet|twitter', re.I),
-    'okMaybeItsACandidateRe': re.compile('and|article|body|column|main|shadow', re.I),
-    'positiveRe': re.compile('article|body|content|entry|hentry|main|page|pagination|post|text|blog|story', re.I),
-    'negativeRe': re.compile('combx|comment|com-|contact|foot|footer|footnote|masthead|media|meta|outbrain|promo|related|scroll|shoutbox|sidebar|sponsor|shopping|tags|tool|widget', re.I),
-    'divToPElementsRe': re.compile('<(a|blockquote|dl|div|img|ol|p|pre|table|ul)', re.I),
-    #'replaceBrsRe': re.compile('(<br[^>]*>[ \n\r\t]*){2,}',re.I),
-    #'replaceFontsRe': re.compile('<(\/?)font[^>]*>',re.I),
-    #'trimRe': re.compile('^\s+|\s+$/'),
-    #'normalizeRe': re.compile('\s{2,}/'),
-    #'killBreaksRe': re.compile('(<br\s*\/?>(\s|&nbsp;?)*){1,}/'),
-    'videoRe': re.compile('https?:\/\/(www\.)?(youtube|vimeo)\.com', re.I),
+    'unlikelyCandidatesRe': re.compile(r'combx|comment|community|disqus|extra|foot|header|menu|remark|rss|shoutbox|sidebar|sponsor|ad-break|agegate|pagination|pager|popup|tweet|twitter', re.I),
+    'okMaybeItsACandidateRe': re.compile(r'and|article|body|column|main|shadow', re.I),
+    'positiveRe': re.compile(r'article|body|content|entry|hentry|main|page|pagination|post|text|blog|story', re.I),
+    'negativeRe': re.compile(r'combx|comment|com-|contact|foot|footer|footnote|masthead|media|meta|outbrain|promo|related|scroll|shoutbox|sidebar|sponsor|shopping|tags|tool|widget', re.I),
+    'divToPElementsRe': re.compile(r'<(a|blockquote|dl|div|img|ol|p|pre|table|ul)', re.I),
+    #'replaceBrsRe': re.compile(r'(<br[^>]*>[ \n\r\t]*){2,}',re.I),
+    #'replaceFontsRe': re.compile(r'<(\/?)font[^>]*>',re.I),
+    #'trimRe': re.compile(r'^\s+|\s+$/'),
+    #'normalizeRe': re.compile(r'\s{2,}/'),
+    #'killBreaksRe': re.compile(r'(<br\s*\/?>(\s|&nbsp;?)*){1,}/'),
+    'videoRe': re.compile(r'https?:\/\/(www\.)?(youtube|vimeo)\.com', re.I),
     #skipFootnoteLink:      /^\s*(\[?[a-z0-9]{1,2}\]?|^|edit|citation needed)\s*$/i,
 }
 
@@ -57,8 +57,8 @@ def clean(text):
     # Many spaces make the following regexes run forever
     text = re.sub(r'\s{255,}', ' ' * 255, text)
 
-    text = re.sub('\s*\n\s*', '\n', text)
-    text = re.sub('\t|[ \t]{2,}', ' ', text)
+    text = re.sub(r'\s*\n\s*', '\n', text)
+    text = re.sub(r'\t|[ \t]{2,}', ' ', text)
     return text.strip()
 
 
@@ -271,7 +271,7 @@ class Document:
                     append = True
                 elif node_length <= 80 \
                     and link_density == 0 \
-                    and re.search('\.( |$)', node_content):
+                    and re.search(r'\.( |$)', node_content):
                     append = True
 
             if append: