# What's the best way to check for type in Python?

The built-in `type()` function is the most commonly used method for checking the type of an object in Python. For example, `type(my_variable)` will return the type of `my_variable`. Additionally, you can use the `isinstance()` function to check if an object is an instance of a particular class or a subclass thereof. For example, `isinstance(my_variable, int)` will return `True` if `my_variable` is an instance of the `int` class.

Here's an example of using the `type()` function:

```python
x = 5
print(type(x))  # Output: <class 'int'>

y = "hello"
print(type(y))  # Output: <class 'str'>
```

You can also use `isinstance()` to check if an object is an instance of a particular class or a subclass thereof. For example,

```python
class A:
    pass

class B(A):
    pass

x = A()
y = B()
print(isinstance(x, A))  # Output: True
print(isinstance(y, A))  # Output: True
```

Here x is an instance of class A and y is an instance of class B, which is a subclass of A, so both would return True when we check if they are instances of A.