It is used to deserialize objects, i.e., converting the byte stream to object hierarchy.
It is used to serialize objects, i.e., to convert Python object hierarchy to byte stream.
It is used to move the file pointer to a specific location.
It is used in exception handling.
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The Correct Option isB
Solution and Explanation
In Python, pickling serializes objects by converting a Python object hierarchy into a byte stream. This stream can then be saved to a file or sent over a network. The `pickle` module facilitates these operations:
Serialization (Pickling): Transforms a Python object into a byte stream using `pickle.dump()` for file output or `pickle.dumps()` for string output. This enables storage and transmission.
Deserialization (Unpickling): Reconstructs the original Python object from a byte stream using functions such as `pickle.load()` or `pickle.loads()`.
Function
Description
pickle.dump(obj, file)
Serializes `obj` to the `file` object.
pickle.dumps(obj)
Serializes `obj` to a byte stream.
pickle.load(file)
Deserializes a byte stream from `file` into a Python object.
pickle.loads(bytes_obj)
Deserializes `bytes_obj` into a Python object.
Pickling's main use is to store Python objects in files or transmit them over networks, preserving their state and structure for efficient data handling and inter-process communication.
Therefore, it is used to serialize objects, converting a Python object hierarchy into a byte stream.