python: Handle slight differences between Python 2 and 3.

* lang/python/helpers.c (pyDataWriteCb): Handle Python integers being
returned on Python 2.
(pyDataSeekCb): Likewise.
* lang/python/pyme/core.py (Data.__init__): Fix testing for string
argument.
(Data.new_from_filepart): Likewise.
* lang/python/pyme/util.py (is_a_string): New function.
* lang/python/tests/t-encrypt-large.py (read_cb): Force evaluation of
generator.
* lang/python/tests/t-idiomatic.py: Partly skip test on Python 2.
* lang/python/tests/t-verify.py (check_result): Here, the difference
between 2 and 3 really matters.  We cannot change the char *
conversion in Python 2 without breaking all existing applications, and
using bytestrings in Python 3 would be very inconvenient.

Signed-off-by: Justus Winter <[email protected]>

1 files changed, 6 insertions, 2 deletions

diff --git a/lang/python/tests/t-verify.py b/lang/python/tests/t-verify.py
index b88bd07c..ed5a91a2 100755
--- a/lang/python/tests/t-verify.py
+++ b/lang/python/tests/t-verify.py
@@ -17,6 +17,7 @@
 # You should have received a copy of the GNU Lesser General Public
 # License along with this program; if not, see <http://www.gnu.org/licenses/>.
 
+import sys
 import os
 import pyme
 from pyme import core, constants, errors
@@ -67,8 +68,11 @@ def check_result(result, summary, validity, fpr, status, notation):
 
     if notation:
         expected_notations = {
-            "bar": b"\xc3\xb6\xc3\xa4\xc3\xbc\xc3\x9f".decode() +
-            " das waren Umlaute und jetzt ein prozent%-Zeichen",
+            "bar": (b"\xc3\xb6\xc3\xa4\xc3\xbc\xc3\x9f" +
+                    b" das waren Umlaute und jetzt ein prozent%-Zeichen"
+                    if sys.version_info[0] < 3 else
+                    b"\xc3\xb6\xc3\xa4\xc3\xbc\xc3\x9f".decode() +
+                    " das waren Umlaute und jetzt ein prozent%-Zeichen"),
             "foobar.1":  "this is a notation data with 2 lines",
             None: "http://www.gu.org/policy/",
         }