diff --git a/idiokit/_selectloop.py b/idiokit/_selectloop.py
index e4efc9e..42bc057 100644
--- a/idiokit/_selectloop.py
+++ b/idiokit/_selectloop.py
@@ -244,6 +244,7 @@ def iterate(self):
         calls = self._process(has_errors, rfds, wfds, xfds)
         self._perform(calls)
 
+
 global_select_loop = SelectLoop()
 select = global_select_loop.select
 sleep = global_select_loop.sleep
diff --git a/idiokit/dns/_dns.py b/idiokit/dns/_dns.py
index 26e7e74..c16faa7 100644
--- a/idiokit/dns/_dns.py
+++ b/idiokit/dns/_dns.py
@@ -409,6 +409,8 @@ def ip(self):
 
     def pack(self):
         return _socket.inet_pton(_socket.AF_INET, self._ip)
+
+
 RR.register_type(A)
 
 
@@ -445,6 +447,8 @@ def ip(self):
 
     def pack(self):
         return _socket.inet_pton(_socket.AF_INET6, self._ip)
+
+
 RR.register_type(AAAA)
 
 
@@ -507,6 +511,8 @@ def pack(self):
             strings.append(chr(len(string)))
             strings.append(string)
         return "".join(strings)
+
+
 RR.register_type(TXT)
 
 
@@ -536,6 +542,8 @@ def name(self):
 
     def pack(self):
         return pack_name(self._name)
+
+
 RR.register_type(PTR)
 
 
@@ -565,6 +573,8 @@ def name(self):
 
     def pack(self):
         return pack_name(self._name)
+
+
 RR.register_type(CNAME)
 
 
@@ -617,6 +627,8 @@ def target(self):
 
     def pack(self):
         return self._struct.pack(self._priority, self._weight, self._port) + pack_name(self._target)
+
+
 RR.register_type(SRV)
 
 
@@ -658,6 +670,8 @@ def exchange(self):
 
     def pack(self):
         return self._struct.pack(self._preference) + pack_name(self._exchange)
+
+
 RR.register_type(MX)
 
 
diff --git a/idiokit/ssl.py b/idiokit/ssl.py
index 6d3fd8e..06663d3 100644
--- a/idiokit/ssl.py
+++ b/idiokit/ssl.py
@@ -132,6 +132,8 @@ def _ca_certs(ca_certs=None):
         fileobj.write(_DUMMY_CERT_DATA)
         fileobj.flush()
         yield fileobj.name
+
+
 ca_certs = _ca_certs
 
 
diff --git a/idiokit/xmlcore.py b/idiokit/xmlcore.py
index 9426f38..48ea0d0 100644
--- a/idiokit/xmlcore.py
+++ b/idiokit/xmlcore.py
@@ -138,6 +138,8 @@ def quoteattr(attr):
     _quoteattr_cache[attr] = value
     _quoteattr_cache_size += length
     return value
+
+
 _quoteattr_cache = {}
 _quoteattr_cache_size = 0
 _quoteattr_cache_max_size = 2 ** 16