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Python code to change shape of list.
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Here is a Python code to change the shape of a list

import random

def change_shape(list_of_list):
    """Change shape of list.

    Args:
        list_of_list (list): list of list

    Returns:
        list: list with changed shape
    """
    return [item for sublist in list_of_list for item in sublist]

# Enter the list
list_of_list = [[1,2,3],[4,5,6],[7,8,9]]

# Calling the function
print((change_shape(list_of_list)))

#Example Output
# [1, 2, 3, 4, 5, 6, 7, 8, 9]

#Remember to inspect code for bugs.