Is There a Python Equivalent to Java's Class.forName()?

How can I dynamically instantiate a class in Python using its name as a string, similar to Java's Class.forName()?

class MyClass:
    def __init__(self):
        print('MyClass instance created!')

# Dynamic instantiation example
your_class_name = 'MyClass'
instance = globals()[your_class_name]()

In Python, you can achieve functionality similar to Java's Class.forName() method by utilizing built-in functions like `globals()`, `locals()`, or `getattr()`. These allow you to dynamically access and instantiate classes using their names as strings.

import mymodule

class MyClass:
    def __init__(self):
        print('MyClass instance created!')

# Using `getattr` to dynamically create an instance
your_class_name = 'MyClass'
instance = getattr(mymodule, your_class_name)()

Causes

• The need to instantiate a class based on its name provided as a string.
• The requirement to use command-line arguments for dynamic class instantiation.

Solutions

• Use the `globals()` function to access a class if it's defined in the global scope.
• Utilize `getattr()` if the class is a member of a module or a specific namespace.
• Leverage `locals()` to access classes defined in the local context.

Mistake: Not importing the module where the class is defined.

Solution: Ensure the module that contains the class is imported before attempting to access the class.

Mistake: Using the wrong scope to access the class (global vs local).

Solution: Verify the scope where the class is defined and use `globals()` or `locals()` appropriately.