Change generator to use Python 3 by default (#441, #509).

This may break things for users that have python-protobuf installed
only for Python 2. Easiest fix is to just install python3-protobuf.

After much consideration, I think making the change now will make
life easiest for most users. There are now alternative files that
can be used if only Python 2 is available, see migration.rst.

1 files changed, 13 insertions, 0 deletions

diff --git a/generator/nanopb_generator.py2 b/generator/nanopb_generator.py2
new file mode 100755
index 0000000..0469461
--- /dev/null
+++ b/generator/nanopb_generator.py2
@@ -0,0 +1,13 @@
+#!/usr/bin/env python2
+# This file is a wrapper around nanopb_generator.py in case you want to run
+# it with Python 2 instead of default Python 3. This only exists for backwards
+# compatibility, do not use for new projects.
+
+from nanopb_generator import *
+
+if __name__ == '__main__':
+    # Check if we are running as a plugin under protoc
+    if 'protoc-gen-' in sys.argv[0] or '--protoc-plugin' in sys.argv:
+        main_plugin()
+    else:
+        main_cli()