How to utilize the list data type in a column using SQLAlchemy?

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Here are the steps to utilize the list data type in a column using SQLAlchemy:

1. Import the required libraries: You will need to import libraries such as SQLAlchemy and JSON.

2. Define the model: Define the model with the column type as a String. In this case, you will be using the JSON format to store the list.

   class ModelName(Base):
      __tablename__ = 'table_name'
      id = Column(Integer, primary_key=True)
      list_field = Column(String)
   

3. Convert the list to a JSON format: Before storing the list in the database, you need to convert it to JSON format using the json.dumps() method.

   import json
   list_data = ["item1", "item2", "item3"]
   json_data = json.dumps(list_data)
   

4. Store the JSON data in the model object: Now you can store the JSON data in the model object.

   model_object = ModelName(list_field=json_data)
   session.add(model_object)
   session.commit()
   

5. Retrieve the list data from the database: To retrieve the list data from the database, you need to use the json.loads() method to convert the JSON data back to a list.

   result = session.query(ModelName).filter_by(id=1).one()
   list_data = json.loads(result.list_field)
   print(list_data)  # ["item1", "item2", "item3"]
   

By following these steps, you can easily utilize the list data type in a column using SQLAlchemy.