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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def resize_bytes(fobj, old_size, new_size, offset):
 """Resize an area in a file adding and deleting at the end of it. Does nothing if no resizing is needed. Args: fobj (fileobj) old_size (int):
 The area starting at offset new_size (int):
 The new size of the area offset (int):
 The start of the area Raises: IOError """


    if new_size < old_size:
        delete_size = old_size - new_size
        delete_at = offset + new_size
        delete_bytes(fobj, delete_size, delete_at)
    elif new_size > old_size:
        insert_size = new_size - old_size
        insert_at = offset + old_size
        insert_bytes(fobj, insert_size, insert_at)