python how to import class from another folder
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Title: Importing Classes from Another Folder in Python: A Step-by-Step Tutorial
Introduction:
In Python, organizing your code into different folders and modules is a common practice to maintain a clean and modular codebase. When working on larger projects, you may find yourself needing to import classes from one folder to another. This tutorial will guide you through the process of importing a class from another folder, providing step-by-step instructions and code examples.
Step 1: Project Structure
Before we begin, let's set up a simple project structure to demonstrate importing a class. Consider the following structure:
Step 2: Create a Class in another_folder
Inside the another_folder, create a Python file named another_class.py with a simple class definition:
Step 3: Import the Class in main_script.py
Now, let's import the AnotherClass from another_folder into main_script.py:
Step 4: Run the Code
Navigate to the main_folder directory in your terminal and execute main_script.py:
You should see the output:
Explanation:
The __init__.py files in both folders indicate that the folders should be treated as Python packages, allowing us to use absolute imports.
The from another_folder.another_class import AnotherClass statement in main_script.py demonstrates how to import the AnotherClass class from the another_folder.
The if _name_ == "__main__": block ensures that the main() function is only executed if the script is run directly, not when it's imported as a module.
Conclusion:
Importing classes from another folder in Python is a straightforward process. By following these steps and organizing your project structure, you can create a modular and maintainable codebase.
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