Merge pull request #5841 from takluyver/i2412

Fix writing history with output to a file in Python 2

IPython/core/magics/history.py

@@ -24,6 +24,7 b' from IPython.core.magic_arguments import (argument, magic_arguments,'
                                           parse_argstring)
 from IPython.testing.skipdoctest import skip_doctest
 from IPython.utils import io
+from IPython.utils.py3compat import cast_unicode_py2
 
 #-----------------------------------------------------------------------------
 # Magics class implementation
@@ -213,7 +214,7 b' class HistoryMagics(Magics):'
                     inline = "\n... ".join(inline.splitlines()) + "\n..."
             print(inline, file=outfile)
             if get_output and output:
-                print(output, file=outfile)
+                print(cast_unicode_py2(output), file=outfile)
 
         if close_at_end:
             outfile.close()

IPython/core/tests/test_magic.py

@@ -236,6 +236,16 b' def doctest_hist_op():'
     >>> 
     """
 
+def test_hist_pof():
+    ip = get_ipython()
+    ip.run_cell(u"1+2", store_history=True)
+    #raise Exception(ip.history_manager.session_number)
+    #raise Exception(list(ip.history_manager._get_range_session()))
+    with TemporaryDirectory() as td:
+        tf = os.path.join(td, 'hist.py')
+        ip.run_line_magic('history', '-pof %s' % tf)
+        assert os.path.isfile(tf)
+
 
 @dec.skip_without('sqlite3')
 def test_macro():