diff -r 5dec1604322c Lib/idlelib/PathBrowser.py
--- a/Lib/idlelib/PathBrowser.py	Wed Feb 26 18:26:49 2014 -0500
+++ b/Lib/idlelib/PathBrowser.py	Thu Feb 27 14:30:27 2014 +0530
@@ -24,48 +24,48 @@
 
     def GetSubList(self):
         sublist = []
-        for dir in sys.path:
-            item = DirBrowserTreeItem(dir)
+        for dir_ in sys.path:
+            item = DirBrowserTreeItem(dir_)
             sublist.append(item)
         return sublist
 
 class DirBrowserTreeItem(TreeItem):
 
-    def __init__(self, dir, packages=[]):
-        self.dir = dir
+    def __init__(self, dir_, packages=[]):
+        self.dir_ = dir_
         self.packages = packages
 
     def GetText(self):
         if not self.packages:
-            return self.dir
+            return self.dir_
         else:
             return self.packages[-1] + ": package"
 
     def GetSubList(self):
         try:
-            names = os.listdir(self.dir or os.curdir)
+            names = os.listdir(self.dir_ or os.curdir)
         except OSError:
             return []
         packages = []
         for name in names:
-            file = os.path.join(self.dir, name)
-            if self.ispackagedir(file):
+            file_ = os.path.join(self.dir_, name)
+            if self.ispackagedir(file_):
                 nn = os.path.normcase(name)
-                packages.append((nn, name, file))
+                packages.append((nn, name, file_))
         packages.sort()
         sublist = []
-        for nn, name, file in packages:
-            item = DirBrowserTreeItem(file, self.packages + [name])
+        for nn, name, file_ in packages:
+            item = DirBrowserTreeItem(file_, self.packages + [name])
             sublist.append(item)
         for nn, name in self.listmodules(names):
-            item = ModuleBrowserTreeItem(os.path.join(self.dir, name))
+            item = ModuleBrowserTreeItem(os.path.join(self.dir_, name))
             sublist.append(item)
         return sublist
 
-    def ispackagedir(self, file):
-        if not os.path.isdir(file):
+    def ispackagedir(self, file_):
+        if not os.path.isdir(file_):
             return 0
-        init = os.path.join(file, "__init__.py")
+        init = os.path.join(file_, "__init__.py")
         return os.path.exists(init)
 
     def listmodules(self, allnames):
@@ -73,7 +73,7 @@
         suffixes = importlib.machinery.EXTENSION_SUFFIXES[:]
         suffixes += importlib.machinery.SOURCE_SUFFIXES[:]
         suffixes += importlib.machinery.BYTECODE_SUFFIXES[:]
-        sorted = []
+        sorted_ = []
         for suff in suffixes:
             i = -len(suff)
             for name in allnames[:]:
@@ -82,10 +82,10 @@
                     mod_name = name[:i]
                     if mod_name not in modules:
                         modules[mod_name] = None
-                        sorted.append((normed_name, name))
+                        sorted_.append((normed_name, name))
                         allnames.remove(name)
-        sorted.sort()
-        return sorted
+        sorted_.sort()
+        return sorted_
 
 def main():
     from idlelib import PyShell
diff -r 5dec1604322c Lib/idlelib/idle_test/test_pathbrowser.py
--- a/Lib/idlelib/idle_test/test_pathbrowser.py	Wed Feb 26 18:26:49 2014 -0500
+++ b/Lib/idlelib/idle_test/test_pathbrowser.py	Thu Feb 27 14:30:27 2014 +0530
@@ -1,4 +1,7 @@
 import unittest
+import os
+import sys
+import idlelib
 import idlelib.PathBrowser as PathBrowser
 
 class PathBrowserTest(unittest.TestCase):
@@ -8,5 +11,17 @@
         d = PathBrowser.DirBrowserTreeItem('')
         d.GetSubList()
 
+        self.assertEqual('', d.GetText())
+
+        dir_ = os.path.split(os.path.abspath(idlelib.__file__))[0]
+        self.assertEqual(d.ispackagedir(dir_), True)
+        self.assertEqual(d.ispackagedir(dir_ + '/Icons'), 0)
+
+    def test_PathBrowserTreeItem(self):
+        p = PathBrowser.PathBrowserTreeItem()
+        self.assertEqual(p.GetText(), 'sys.path')
+        self.assertEqual(len(p.GetSubList()), len(sys.path))
+
+
 if __name__ == '__main__':
     unittest.main(verbosity=2, exit=False)