Fix %history -f foo in kernel.

takluyver · takluyver · commit 05e76c381b3e · 2013-12-18T12:43:02.000-08:00
Closes gh-4582
diff --git a/IPython/kernel/zmq/ipkernel.py b/IPython/kernel/zmq/ipkernel.py
@@ -341,7 +341,7 @@ def execute_request(self, stream, ident, parent):
         
         try:
             content = parent[u'content']
-            code = content[u'code']
+            code = py3compat.cast_unicode_py2(content[u'code'])
             silent = content[u'silent']
             store_history = content.get(u'store_history', not silent)
         except:
diff --git a/IPython/utils/py3compat.py b/IPython/utils/py3compat.py
@@ -83,6 +83,7 @@ def safe_unicode(e):
     str_to_bytes = encode
     bytes_to_str = decode
     cast_bytes_py2 = no_code
+    cast_unicode_py2 = no_code
     
     string_types = (str,)
     unicode_type = str
@@ -139,6 +140,7 @@ def u_format(s):
     str_to_bytes = no_code
     bytes_to_str = no_code
     cast_bytes_py2 = cast_bytes
+    cast_unicode_py2 = cast_unicode
     
     string_types = (str, unicode)
     unicode_type = unicode
