failure case

examples/ffi/python_calling_rust/BUILD.bazel

@@ -13,17 +13,41 @@
 # limitations under the License.
 
 load("@rules_python//python:defs.bzl", "py_test")
+load("@rules_rust//rust:defs.bzl", "rust_library")
 load("@rules_rust//python:py_rust_library.bzl", "py_rust_library")
 
+rust_library(
+    name = "helper",
+    srcs = ["helper.rs"],
+)
+
 py_rust_library(
     name = "hello_py",
     srcs = ["hello_py.rs"],
     edition = "2018",
-    deps = ["//ffi/python_calling_rust/raze:pyo3"],
+    deps = [
+        ":helper",
+        "//ffi/python_calling_rust/raze:pyo3",
+    ],
+)
+
+py_rust_library(
+    name = "hello_py_2",
+    srcs = ["hello_py_2.rs"],
+    edition = "2018",
+    deps = [
+        ":helper",
+        "//ffi/python_calling_rust/raze:pyo3",
+    ],
 )
 
+
+
 py_test(
     name = "test",
     srcs = ["test.py"],
-    deps = [":hello_py"],
+    deps = [
+        ":hello_py",
+        ":hello_py_2",
+    ],
 )

examples/ffi/python_calling_rust/hello_py.rs

@@ -6,9 +6,15 @@ fn sum_as_string(a: usize, b: usize) -> PyResult<String> {
     Ok((a + b).to_string())
 }
 
+#[pyfunction]
+fn secret() -> i32 {
+    &helper::secret as *const u32 as usize as i32
+}
+
 #[pymodule]
 fn hello_py(_py: Python, m: &PyModule) -> PyResult<()> {
     m.add_function(wrap_pyfunction!(sum_as_string, m)?)?;
+    m.add_function(wrap_pyfunction!(secret, m)?)?;
 
     Ok(())
 }

examples/ffi/python_calling_rust/hello_py_2.rs

@@ -0,0 +1,20 @@
+use pyo3::prelude::*;
+use pyo3::wrap_pyfunction;
+
+#[pyfunction]
+fn sum_as_string(a: usize, b: usize) -> PyResult<String> {
+    Ok((a + b).to_string())
+}
+
+#[pyfunction]
+fn secret() -> i32 {
+    &helper::secret as *const u32 as usize as i32
+}
+
+#[pymodule]
+fn hello_py_2(_py: Python, m: &PyModule) -> PyResult<()> {
+    m.add_function(wrap_pyfunction!(sum_as_string, m)?)?;
+    m.add_function(wrap_pyfunction!(secret, m)?)?;
+
+    Ok(())
+}

examples/ffi/python_calling_rust/helper.rs

@@ -0,0 +1 @@
+pub static secret: u32 = 42;

examples/ffi/python_calling_rust/test.py

@@ -1,4 +1,14 @@
-from ffi.python_calling_rust.hello_py import sum_as_string
+from ffi.python_calling_rust import hello_py
+from ffi.python_calling_rust import hello_py_2
+
+
+assert hello_py.sum_as_string(1, 1) == "2"
+assert hello_py_2.sum_as_string(1, 1) == "2"
+
+
+s1 = hello_py.secret()
+s2 = hello_py_2.secret()
+
+assert s1 == s2, (s1, s2)
 
-assert sum_as_string(1, 1) == "2"
 print("Ok!")