diff --git a/a.py b/a.py
new file mode 100644
index 0000000000000000000000000000000000000000..c486181a5ad45926101975fc7a76fe975ef717b3
--- /dev/null
+++ b/a.py
@@ -0,0 +1,47 @@
+try:
+    import jinja2
+    template = jinja2.Template("Hello {{ name }}!")
+    assert template.render(name="World") == "Hello World!"
+    print("✅ Jinja2 模板渲染测试通过")
+except Exception as e:
+    print("❌ Jinja2 测试失败:", e)
+
+try:
+    import jsonschema
+    from jsonschema import validate
+    schema = {"type": "object", "required": ["name"], "properties": {"name": {"type": "string"}}}
+    instance = {"name": "test"}
+    validate(instance=instance, schema=schema)
+    print("✅ jsonschema 验证测试通过")
+except Exception as e:
+    print("❌ jsonschema 测试失败:", e)
+
+try:
+    import numpy
+    a = numpy.array([1, 2, 3])
+    assert len(a) == 3
+    print("✅ Numpy 数组测试通过")
+except Exception as e:
+    print("❌ Numpy 测试失败:", e)
+
+try:
+    import pandas
+    df = pandas.DataFrame({"col": [1, 2, 3]})
+    assert len(df) == 3
+    print("✅ Pandas DataFrame 测试通过")
+except Exception as e:
+    print("❌ Pandas 测试失败:", e)
+
+try:
+    import loguru
+    from loguru import logger
+    logger.add("test.log")
+    logger.info("Test log message")
+    with open("test.log", "r") as f:
+        content = f.read()
+        assert "Test log message" in content
+    print("✅ Loguru 日志测试通过")
+except Exception as e:
+    print("❌ Loguru 测试失败:", e)
+
+print("\n🎉 所有测试完成")
\ No newline at end of file