py/objarray: Fix array.append so it doesn't extend if append fails.

Addresses issue #1965.

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/basics/bytearray_append.py b/tests/basics/bytearray_append.py
new file mode 100644
index 0000000000..06e62c6bcb
--- /dev/null
+++ b/tests/basics/bytearray_append.py
@@ -0,0 +1,15 @@
+# test bytearray.append method
+
+a = bytearray(4)
+print(a)
+
+# append should append a single byte
+a.append(2)
+print(a)
+
+# a should not be modified if append fails
+try:
+    a.append(None)
+except TypeError:
+    print('TypeError')
+print(a)