diff --git a/linkcheck/HtmlParser/__init__.py b/linkcheck/HtmlParser/__init__.py
index d4bb0e9f..3799fdf1 100644
--- a/linkcheck/HtmlParser/__init__.py
+++ b/linkcheck/HtmlParser/__init__.py
@@ -33,14 +33,14 @@ Fast HTML parser module written in C with the following features:
     not need the bison error recovery.
     Incomplete data is rescanned the next time the parser calls yylex() or
     when it is being flush()ed.
-    
+
     The following syntax errors will be recognized correctly:
      1. missing quotes around attribute values
      2. "</...>" end tags in script modus
      3. missing ">" in tags
      4. invalid tag names
      5. invalid characters inside tags or tag attributes
-    
+
     Additionally the parser has the following features:
      1. NULL bytes are changed into spaces
      2. <!-- ... --> inside a <script> or <style> are not treated as
@@ -234,4 +234,3 @@ def set_doctype (parsobj, doctype):
     """
     if u"XHTML" in doctype:
         parsobj.doctype = "XHTML"
-
diff --git a/linkcheck/checker/__init__.py b/linkcheck/checker/__init__.py
index aa7c9bee..70f17e8a 100644
--- a/linkcheck/checker/__init__.py
+++ b/linkcheck/checker/__init__.py
@@ -385,4 +385,3 @@ def get_index_html (urls):
         lines.append('<a href="%s">%s</a>' % (url, name))
     lines.extend(["</body>", "</html>"])
     return os.linesep.join(lines)
-
diff --git a/linkcheck/checker/cache.py b/linkcheck/checker/cache.py
index 81ed6b7d..b203dc8d 100644
--- a/linkcheck/checker/cache.py
+++ b/linkcheck/checker/cache.py
@@ -248,4 +248,3 @@ class Cache (object):
             if val:
                 cookievals.append(val)
         return cookievals
-
diff --git a/linkcheck/checker/errorurl.py b/linkcheck/checker/errorurl.py
index e26ef573..0c4b279b 100644
--- a/linkcheck/checker/errorurl.py
+++ b/linkcheck/checker/errorurl.py
@@ -41,4 +41,3 @@ class ErrorUrl (urlbase.UrlBase):
         Cache key is forbidden.
         """
         raise NotImplementedError, "cache keys are forbidden"
-
diff --git a/linkcheck/checker/fileurl.py b/linkcheck/checker/fileurl.py
index 8c24e71f..f5caa216 100644
--- a/linkcheck/checker/fileurl.py
+++ b/linkcheck/checker/fileurl.py
@@ -277,4 +277,3 @@ class FileUrl (urlbase.UrlBase):
             segments = segments[:-1]
         path = "/".join(segments)
         return "file://%s" % re.escape(path)
-
diff --git a/linkcheck/checker/httpheaders.py b/linkcheck/checker/httpheaders.py
index f39a6809..e7b94c0d 100644
--- a/linkcheck/checker/httpheaders.py
+++ b/linkcheck/checker/httpheaders.py
@@ -97,4 +97,3 @@ def get_content_encoding (headers):
     @rtype: string
     """
     return headers.get("Content-Encoding", "").strip()
-
diff --git a/linkcheck/checker/httpurl.py b/linkcheck/checker/httpurl.py
index c592fdab..4d0c4f7b 100644
--- a/linkcheck/checker/httpurl.py
+++ b/linkcheck/checker/httpurl.py
@@ -49,7 +49,7 @@ _is_amazon = re.compile(r'^www\.amazon\.(com|de|ca|fr|co\.(uk|jp))').search
 httpresponses = {
     100: 'Continue',
     101: 'Switching Protocols',
-    
+
     200: 'OK',
     201: 'Created',
     202: 'Accepted',
@@ -57,7 +57,7 @@ httpresponses = {
     204: 'No Content',
     205: 'Reset Content',
     206: 'Partial Content',
-    
+
     300: 'Multiple Choices',
     301: 'Moved Permanently',
     302: 'Found',
@@ -66,7 +66,7 @@ httpresponses = {
     305: 'Use Proxy',
     306: '(Unused)',
     307: 'Temporary Redirect',
-    
+
     400: 'Bad Request',
     401: 'Unauthorized',
     402: 'Payment Required',
@@ -85,7 +85,7 @@ httpresponses = {
     415: 'Unsupported Media Type',
     416: 'Requested Range Not Satisfiable',
     417: 'Expectation Failed',
-    
+
     500: 'Internal Server Error',
     501: 'Not Implemented',
     502: 'Bad Gateway',
@@ -310,7 +310,7 @@ class HttpUrl (internpaturl.InternPatternUrl, proxysupport.ProxySupport):
                                 redirected)
             urlparts = linkcheck.strformat.url_unicode_split(redirected)
             # check if we still have the same scheme type, it could be a
-	    # different one
+            # different one
             if urlparts[0] != self.scheme:
                 self.add_warning(
                            _("Redirection to different URL type encountered; "
@@ -621,4 +621,3 @@ class HttpUrl (internpaturl.InternPatternUrl, proxysupport.ProxySupport):
                 # ignore close errors
                 pass
         self.url_connection = None
-
diff --git a/linkcheck/configuration.py b/linkcheck/configuration.py
index 0315f2be..5fd2e038 100644
--- a/linkcheck/configuration.py
+++ b/linkcheck/configuration.py
@@ -479,4 +479,3 @@ class Configuration (dict):
         """
         fp.write("[filtering]%s" % os.linesep)
         # XXX todo
-
diff --git a/linkcheck/lc_cgi.py b/linkcheck/lc_cgi.py
index eb6a6711..a4d26609 100644
--- a/linkcheck/lc_cgi.py
+++ b/linkcheck/lc_cgi.py
@@ -184,4 +184,3 @@ Errors are logged.
 </blockquote>
 </body>
 </html>""") % why)
-
diff --git a/linkcheck/linkparse.py b/linkcheck/linkparse.py
index 2bd68bd0..c4f4fac5 100644
--- a/linkcheck/linkparse.py
+++ b/linkcheck/linkparse.py
@@ -151,7 +151,7 @@ def is_meta_url (attr, attrs):
     res = False
     if attr == "content":
         equiv = attrs.get_true('http-equiv', u'').lower()
-	scheme = attrs.get_true('scheme', u'').lower()
+        scheme = attrs.get_true('scheme', u'').lower()
         res = equiv in (u'refresh',) or scheme in (u'dcterms.uri',)
     if attr == "href":
         rel = attrs.get_true('rel', u'').lower()
diff --git a/linkcheck/lock.py b/linkcheck/lock.py
index 58feee90..d1b0456a 100644
--- a/linkcheck/lock.py
+++ b/linkcheck/lock.py
@@ -55,4 +55,3 @@ class AssertLock (lock_klass):
         See if this lock is owned.
         """
         return self._is_owned()
-
diff --git a/linkcheck/threader.py b/linkcheck/threader.py
index e5ccbbbe..26b59239 100644
--- a/linkcheck/threader.py
+++ b/linkcheck/threader.py
@@ -146,4 +146,3 @@ class Threader (object):
         """
         return "Threader with %d threads (max %d)" % \
             (self.active_threads(), self.threads_max)
-
diff --git a/linkcheck/url.py b/linkcheck/url.py
index 11ff30ca..0627aea8 100644
--- a/linkcheck/url.py
+++ b/linkcheck/url.py
@@ -478,4 +478,3 @@ def url_split (url):
         host = host.lower()
         host, port = urllib.splitnport(host, port)
     return scheme, host, port, document
-