added info.ext

Author: willmcgugan

.coveragerc

@@ -5,3 +5,4 @@ omit = fs/test.py
 exclude_lines =
     pragma: no cover
     if False:
+    @typing.overload

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [2.0.21] - Unreleased
+
+### Added
+
+- Added ext attribute to info
+
 ## [2.0.20] - 2018-03-13
 
 ### Fixed

fs/info.py

@@ -182,6 +182,19 @@ def name(self):
         """
         return self.get('basic', 'name')
 
+    @property
+    def ext(self):
+        # type: () -> Text
+        """`str`: the resource extension (including dot).
+
+        Example:
+            >>> info.ext
+            '.py'
+        """
+        name = self.get('basic', 'name')
+        basename, dot, ext = name.rpartition('.')
+        return dot + ext if dot else ''
+
     @property
     def is_dir(self):
         # type: () -> bool

tests/test_info.py

@@ -67,14 +67,15 @@ def test_basic(self):
         # Check simple file
         info = Info({
             "basic": {
-                "name": "bar",
+                "name": "bar.py",
                 "is_dir": False
             }
         })
-        self.assertEqual(info.name, "bar")
+        self.assertEqual(info.name, "bar.py")
         self.assertIsInstance(info.is_dir, bool)
         self.assertFalse(info.is_dir)
-        self.assertEqual(repr(info), "<file 'bar'>")
+        self.assertEqual(repr(info), "<file 'bar.py'>")
+        self.assertEqual(info.ext, '.py')
 
         # Check dir
         info = Info({
@@ -85,6 +86,7 @@ def test_basic(self):
         })
         self.assertTrue(info.is_dir)
         self.assertEqual(repr(info), "<dir 'foo'>")
+        self.assertEqual(info.ext, '')
 
     def test_details(self):
         dates = [