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-rw-r--r--lang/python/helpers.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/lang/python/helpers.c b/lang/python/helpers.c
index 8f71a305..576767ca 100644
--- a/lang/python/helpers.c
+++ b/lang/python/helpers.c
@@ -293,8 +293,10 @@ _gpg_obj2gpgme_data_t(PyObject *input, int argnum, gpgme_data_t *wrapper,
return _gpg_obj2gpgme_t(data, "gpgme_data_t", argnum);
return PyErr_Format(PyExc_TypeError,
- "arg %d: expected gpg.Data, file, or an object "
- "implementing the buffer protocol, got %s",
+ "arg %d: expected gpg.Data, file, "
+ "bytes (not string!), or an object "
+ "implementing the buffer protocol. Got: %s. "
+ "If you provided a string, try to encode() it.",
argnum, data->ob_type->tp_name);
}