This example demonstrates how to retrieve all variable names and their values in Python, both at the module level and for object attributes, using the built-in `vars()` function. It shows that calling `vars()` without arguments prints the current local symbol table, including special module attributes like `__name__` and `__package__` in addition to user-defined variables such as a dictionary `a`. The code then applies `vars()` to an instance of a custom `Info` class, outputting its attribute dictionary `{'name': 'John'}`. The example relies solely on Python’s standard library, explicitly using `vars()` to inspect namespaces.