1 files changed, 18 insertions, 6 deletions

diff --git a/lockfile/__init__.py b/lockfile/__init__.py
index 04b2350..a6f44a5 100644
--- a/lockfile/__init__.py
+++ b/lockfile/__init__.py
@@ -53,14 +53,11 @@ Exceptions:
 
 from __future__ import absolute_import
 
-import sys
-import socket
+import functools
 import os
+import socket
 import threading
-import time
-import urllib
 import warnings
-import functools
 
 # Work with PEP8 and non-PEP8 versions of threading module.
 if not hasattr(threading, "current_thread"):
@@ -73,6 +70,7 @@ __all__ = ['Error', 'LockError', 'LockTimeout', 'AlreadyLocked',
            'LinkFileLock', 'MkdirFileLock', 'SQLiteFileLock',
            'LockBase', 'locked']
 
+
 class Error(Exception):
     """
     Base class for other exceptions.
@@ -84,6 +82,7 @@ class Error(Exception):
     """
     pass
 
+
 class LockError(Error):
     """
     Base class for error arising from attempts to acquire the lock.
@@ -95,6 +94,7 @@ class LockError(Error):
     """
     pass
 
+
 class LockTimeout(LockError):
     """Raised when lock creation fails within a user-defined period of time.
 
@@ -105,6 +105,7 @@ class LockTimeout(LockError):
     """
     pass
 
+
 class AlreadyLocked(LockError):
     """Some other thread/process is locking the file.
 
@@ -115,6 +116,7 @@ class AlreadyLocked(LockError):
     """
     pass
 
+
 class LockFailed(LockError):
     """Lock file creation failed for some other reason.
 
@@ -125,6 +127,7 @@ class LockFailed(LockError):
     """
     pass
 
+
 class UnlockError(Error):
     """
     Base class for errors arising from attempts to release the lock.
@@ -136,6 +139,7 @@ class UnlockError(Error):
     """
     pass
 
+
 class NotLocked(UnlockError):
     """Raised when an attempt is made to unlock an unlocked file.
 
@@ -146,6 +150,7 @@ class NotLocked(UnlockError):
     """
     pass
 
+
 class NotMyLock(UnlockError):
     """Raised when an attempt is made to unlock a file someone else locked.
 
@@ -156,6 +161,7 @@ class NotMyLock(UnlockError):
     """
     pass
 
+
 class _SharedBase(object):
     def __init__(self, path):
         self.path = path
@@ -200,6 +206,7 @@ class _SharedBase(object):
     def __repr__(self):
         return "<%s: %r>" % (self.__class__.__name__, self.path)
 
+
 class LockBase(_SharedBase):
     """Base class for platform-specific lock classes."""
     def __init__(self, path, threaded=True, timeout=None):
@@ -257,6 +264,7 @@ class LockBase(_SharedBase):
         return "<%s: %r -- %r>" % (self.__class__.__name__, self.unique_name,
                                    self.path)
 
+
 def _fl_helper(cls, mod, *args, **kwds):
     warnings.warn("Import from %s module instead of lockfile package" % mod,
                   DeprecationWarning, stacklevel=2)
@@ -270,6 +278,7 @@ def _fl_helper(cls, mod, *args, **kwds):
         kwds["threaded"] = True
     return cls(*args, **kwds)
 
+
 def LinkFileLock(*args, **kwds):
     """Factory function provided for backwards compatibility.
 
@@ -280,6 +289,7 @@ def LinkFileLock(*args, **kwds):
     return _fl_helper(linklockfile.LinkLockFile, "lockfile.linklockfile",
                       *args, **kwds)
 
+
 def MkdirFileLock(*args, **kwds):
     """Factory function provided for backwards compatibility.
 
@@ -290,6 +300,7 @@ def MkdirFileLock(*args, **kwds):
     return _fl_helper(mkdirlockfile.MkdirLockFile, "lockfile.mkdirlockfile",
                       *args, **kwds)
 
+
 def SQLiteFileLock(*args, **kwds):
     """Factory function provided for backwards compatibility.
 
@@ -300,6 +311,7 @@ def SQLiteFileLock(*args, **kwds):
     return _fl_helper(sqlitelockfile.SQLiteLockFile, "lockfile.sqlitelockfile",
                       *args, **kwds)
 
+
 def locked(path, timeout=None):
     """Decorator which enables locks for decorated function.
 
@@ -324,6 +336,7 @@ def locked(path, timeout=None):
         return wrapper
     return decor
 
+
 if hasattr(os, "link"):
     from . import linklockfile as _llf
     LockFile = _llf.LinkLockFile
@@ -332,4 +345,3 @@ else:
     LockFile = _mlf.MkdirLockFile
 
 FileLock = LockFile
-