diff --git a/python/testing/__init__.py b/python/testing/__init__.py
new file mode 100644
index 0000000..525291c
--- /dev/null
+++ b/python/testing/__init__.py
@@ -0,0 +1 @@
+"""init."""
diff --git a/python/testing/logging/__init__.py b/python/testing/logging/__init__.py
new file mode 100644
index 0000000..525291c
--- /dev/null
+++ b/python/testing/logging/__init__.py
@@ -0,0 +1 @@
+"""init."""
diff --git a/python/testing/logging/bar.py b/python/testing/logging/bar.py
new file mode 100644
index 0000000..00c33d4
--- /dev/null
+++ b/python/testing/logging/bar.py
@@ -0,0 +1,11 @@
+"""Bar."""
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+def bar() -> None:
+    """Bar."""
+    logger.debug(f"bar {__name__}")
+    logger.debug("bar")
diff --git a/python/testing/logging/configure_logger.py b/python/testing/logging/configure_logger.py
new file mode 100644
index 0000000..3932a58
--- /dev/null
+++ b/python/testing/logging/configure_logger.py
@@ -0,0 +1,16 @@
+import logging
+import sys
+
+
+def configure_logger(level: str = "INFO", test: str = None) -> None:
+    """Configure the logger.
+    Args:
+        level (str, optional): The logging level. Defaults to "INFO".
+    """
+    logging.basicConfig(
+        level=level,
+        datefmt="%Y-%m-%dT%H:%M:%S%z",
+        format="%(asctime)s %(levelname)s %(filename)s:%(lineno)d - %(message)s"
+        f" {test}",
+        handlers=[logging.StreamHandler(sys.stdout)],
+    )
diff --git a/python/testing/logging/foo.py b/python/testing/logging/foo.py
new file mode 100644
index 0000000..e8a7663
--- /dev/null
+++ b/python/testing/logging/foo.py
@@ -0,0 +1,18 @@
+"""foo"""
+
+import logging
+
+from python.testing.logging.bar import bar
+from python.testing.logging.configure_logger import configure_logger
+
+logger = logging.getLogger(__name__)
+
+
+def foo() -> None:
+    """Foo."""
+
+    configure_logger("DEBUG", "FOO")
+    logger.debug(f"foo {__name__}")
+    logger.debug("foo")
+
+    bar()
diff --git a/python/testing/logging/main.py b/python/testing/logging/main.py
new file mode 100644
index 0000000..a723bbe
--- /dev/null
+++ b/python/testing/logging/main.py
@@ -0,0 +1,33 @@
+"""main."""
+
+import logging
+
+from python.testing.logging.configure_logger import configure_logger
+from python.testing.logging.bar import bar
+from python.testing.logging.foo import foo
+
+logger = logging.getLogger(__name__)
+
+
+def main() -> None:
+    """Main."""
+    configure_logger("DEBUG")
+    # handler = logging.StreamHandler()
+
+    # Create and attach a formatter
+    # formatter = logging.Formatter(
+    #     "%(asctime)s %(levelname)s %(filename)s:%(lineno)d - %(message)s FOO"
+    # )
+    # handler.setFormatter(formatter)
+
+    # Attach handler to logger
+    # foo_logger = logging.getLogger("python.testing.logging.foo")
+    # foo_logger.addHandler(handler)
+    # foo_logger.propagate = True
+    logger.debug("main")
+    foo()
+    bar()
+
+
+if __name__ == "__main__":
+    main()