From 5173a303f0c0dfc6e6e1d5b0884aa1a0d63b4be5 Mon Sep 17 00:00:00 2001
From: Maximilian Hils <git@maximilianhils.com>
Date: Fri, 29 Apr 2022 13:24:28 +0200
Subject: [PATCH] only re-export `__all__` if it's set

---
 guide/src/project_layout.md  | 3 ++-
 src/module_writer.rs         | 6 +++++-
 src/templates/__init__.py.j2 | 3 ++-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/guide/src/project_layout.md b/guide/src/project_layout.md
index d8767fef5..d1f17fd98 100644
--- a/guide/src/project_layout.md
+++ b/guide/src/project_layout.md
@@ -23,7 +23,8 @@ wheel. For convenience, this file includes the following:
 from .my_project import *
 
 __doc__ = my_project.__doc__
-__all__ = my_project.__all__
+if hasattr(my_project, "__all__"):
+    __all__ = my_project.__all__
 ```
 
 such that the module functions may be called directly with:
diff --git a/src/module_writer.rs b/src/module_writer.rs
index db5378ff4..12297cd4a 100644
--- a/src/module_writer.rs
+++ b/src/module_writer.rs
@@ -656,7 +656,11 @@ pub fn write_bindings_module(
             writer.add_bytes(
                 &module.join("__init__.py"),
                 format!(
-                    "from .{module_name} import *\n\n__doc__ = {module_name}.__doc__\n__all__ = {module_name}.__all__\n",
+                    "from .{module_name} import *\n\
+                    \n\
+                    __doc__ = {module_name}.__doc__\n\
+                    if hasattr({module_name}, \"__all__\"):\n\
+                        __all__ = {module_name}.__all__\n",
                     module_name = module_name
                 )
                 .as_bytes(),
diff --git a/src/templates/__init__.py.j2 b/src/templates/__init__.py.j2
index 17b58b0e1..a64034451 100644
--- a/src/templates/__init__.py.j2
+++ b/src/templates/__init__.py.j2
@@ -2,4 +2,5 @@ from .{{ crate_name }} import *
 
 
 __doc__ = {{ crate_name }}.__doc__
-__all__ = {{ crate_name }}.__all__
+if hasattr({{ crate_name }}, "__all__"):
+	__all__ = {{ crate_name }}.__all__