


How to Save and Load Multiple Objects in a Python Pickle File?
Saving and Loading Multiple Objects in a Python Pickle File
To save multiple objects in a pickle file, follow these steps:
<code class="python">import pickle # Create a list of objects to be saved objects_to_save = [object1, object2, ...] # Open a binary file for writing with open('my_pickle_file', 'wb') as file: # Pickle each object and write it to the file for obj in objects_to_save: pickle.dump(obj, file)</code>
To load multiple objects from a pickle file:
<code class="python"># Open the binary file for reading with open('my_pickle_file', 'rb') as file: # Load and print each object from the file while True: try: obj = pickle.load(file) print(obj) except EOFError: break</code>
Additional Considerations:
- Using Lists: Storing objects in a list before pickling can provide flexibility, but it adds an extra layer of abstraction.
- Alternative Approaches: Other methods like JSON or NumPy's savez may be suitable for certain scenarios.
- Generator: The provided solution generates objects on demand, avoiding memory limitations.
- Efficiency: If the file is large, using a generator to load objects in a loop may be more efficient than loading the entire file into memory.
The above is the detailed content of How to Save and Load Multiple Objects in a Python Pickle File?. For more information, please follow other related articles on the PHP Chinese website!

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