Restoring authorship annotation for <shadchin@yandex-team.ru>. Commit 2 of 2.

1 files changed, 74 insertions, 74 deletions

diff --git a/contrib/python/ipython/py3/IPython/utils/contexts.py b/contrib/python/ipython/py3/IPython/utils/contexts.py
index 214abace2c..4d379b0eda 100644
--- a/contrib/python/ipython/py3/IPython/utils/contexts.py
+++ b/contrib/python/ipython/py3/IPython/utils/contexts.py
@@ -1,74 +1,74 @@
-# encoding: utf-8 
-"""Miscellaneous context managers. 
-""" 
- 
-import warnings 
- 
-# Copyright (c) IPython Development Team. 
-# Distributed under the terms of the Modified BSD License. 
- 
-class preserve_keys(object): 
-    """Preserve a set of keys in a dictionary. 
- 
-    Upon entering the context manager the current values of the keys 
-    will be saved. Upon exiting, the dictionary will be updated to 
-    restore the original value of the preserved keys. Preserved keys 
-    which did not exist when entering the context manager will be 
-    deleted. 
- 
-    Examples 
-    -------- 
- 
-    >>> d = {'a': 1, 'b': 2, 'c': 3} 
-    >>> with preserve_keys(d, 'b', 'c', 'd'): 
-    ...     del d['a'] 
-    ...     del d['b']      # will be reset to 2 
-    ...     d['c'] = None   # will be reset to 3 
-    ...     d['d'] = 4      # will be deleted 
-    ...     d['e'] = 5 
-    ...     print(sorted(d.items())) 
-    ... 
-    [('c', None), ('d', 4), ('e', 5)] 
-    >>> print(sorted(d.items())) 
-    [('b', 2), ('c', 3), ('e', 5)] 
-    """ 
- 
-    def __init__(self, dictionary, *keys): 
-        self.dictionary = dictionary 
-        self.keys = keys 
- 
-    def __enter__(self): 
-        # Actions to perform upon exiting. 
-        to_delete = [] 
-        to_update = {} 
- 
-        d = self.dictionary 
-        for k in self.keys: 
-            if k in d: 
-                to_update[k] = d[k] 
-            else: 
-                to_delete.append(k) 
- 
-        self.to_delete = to_delete 
-        self.to_update = to_update 
- 
-    def __exit__(self, *exc_info): 
-        d = self.dictionary 
- 
-        for k in self.to_delete: 
-            d.pop(k, None) 
-        d.update(self.to_update) 
- 
- 
-class NoOpContext(object): 
-    """ 
-    Deprecated 
-     
-    Context manager that does nothing.""" 
- 
-    def __init__(self): 
-        warnings.warn("""NoOpContext is deprecated since IPython 5.0 """, 
-                                            DeprecationWarning, stacklevel=2) 
- 
-    def __enter__(self): pass 
-    def __exit__(self, type, value, traceback): pass 
+# encoding: utf-8
+"""Miscellaneous context managers.
+"""
+
+import warnings
+
+# Copyright (c) IPython Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+class preserve_keys(object):
+    """Preserve a set of keys in a dictionary.
+
+    Upon entering the context manager the current values of the keys
+    will be saved. Upon exiting, the dictionary will be updated to
+    restore the original value of the preserved keys. Preserved keys
+    which did not exist when entering the context manager will be
+    deleted.
+
+    Examples
+    --------
+
+    >>> d = {'a': 1, 'b': 2, 'c': 3}
+    >>> with preserve_keys(d, 'b', 'c', 'd'):
+    ...     del d['a']
+    ...     del d['b']      # will be reset to 2
+    ...     d['c'] = None   # will be reset to 3
+    ...     d['d'] = 4      # will be deleted
+    ...     d['e'] = 5
+    ...     print(sorted(d.items()))
+    ...
+    [('c', None), ('d', 4), ('e', 5)]
+    >>> print(sorted(d.items()))
+    [('b', 2), ('c', 3), ('e', 5)]
+    """
+
+    def __init__(self, dictionary, *keys):
+        self.dictionary = dictionary
+        self.keys = keys
+
+    def __enter__(self):
+        # Actions to perform upon exiting.
+        to_delete = []
+        to_update = {}
+
+        d = self.dictionary
+        for k in self.keys:
+            if k in d:
+                to_update[k] = d[k]
+            else:
+                to_delete.append(k)
+
+        self.to_delete = to_delete
+        self.to_update = to_update
+
+    def __exit__(self, *exc_info):
+        d = self.dictionary
+
+        for k in self.to_delete:
+            d.pop(k, None)
+        d.update(self.to_update)
+
+
+class NoOpContext(object):
+    """
+    Deprecated
+    
+    Context manager that does nothing."""
+
+    def __init__(self):
+        warnings.warn("""NoOpContext is deprecated since IPython 5.0 """,
+                                            DeprecationWarning, stacklevel=2)
+
+    def __enter__(self): pass
+    def __exit__(self, type, value, traceback): pass