Use propper base64 encoding version for py3

Removes py3-only warning (this alias might be removed in future py3 version):

> DeprecationWarning: encodestring() is a deprecated alias, use encodebytes()
>  ('%s:%s' % (username, password)).encode('utf-8')).decode('utf-8').replace('\n', '')

py2-compatible change.

1 files changed, 4 insertions, 0 deletions

diff --git a/budget/utils.py b/budget/utils.py
index f518049..0e6251b 100644
--- a/budget/utils.py
+++ b/budget/utils.py
@@ -1,3 +1,4 @@
+import base64
 import re
 import inspect
 
@@ -120,3 +121,6 @@ def list_of_dicts2csv(dict_to_convert):
     if six.PY3:
         csv_file = BytesIO(csv_file.getvalue().encode('utf-8'))
     return csv_file
+
+# base64 encoding that works with both py2 and py3 and yield no warning
+base64_encode =  base64.encodestring if six.PY2 else base64.encodebytes