diff --git a/hexlet_python_package/__init__.py b/hexlet_python_package/__init__.py
index e69de29..2498a98 100644
--- a/hexlet_python_package/__init__.py
+++ b/hexlet_python_package/__init__.py
@@ -0,0 +1,8 @@
+import sys
+
+from hexlet_python_package.half import half
+
+__all__ = (
+    "sys",
+    "half",
+)
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index c9f967e..92daf1d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,6 +7,9 @@ name = "python-example-app"
 version = "0.1.0"
 description = "Example application"
 readme = "README.md"
+dependencies = [
+    "pytest-cov>=5.0.0",
+]
 
 [tool.uv]
 dev-dependencies = [
diff --git a/python-package b/python-package
new file mode 160000
index 0000000..2dd1f68
--- /dev/null
+++ b/python-package
@@ -0,0 +1 @@
+Subproject commit 2dd1f68117a9150237bf1b1d9cdd6ff921290cc8
diff --git a/uv.lock b/uv.lock
index 1876788..270e393 100644
--- a/uv.lock
+++ b/uv.lock
@@ -107,6 +107,9 @@ wheels = [
 name = "python-example-app"
 version = "0.1.0"
 source = { editable = "." }
+dependencies = [
+    { name = "pytest-cov" },
+]
 
 [package.dev-dependencies]
 dev = [
@@ -116,6 +119,7 @@ dev = [
 ]
 
 [package.metadata]
+requires-dist = [{ name = "pytest-cov", specifier = ">=5.0.0" }]
 
 [package.metadata.requires-dev]
 dev = [