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You could save the data into a text file, and import this to excel ( or similar ).

file = open("yourfile.txt", "w+")
data_to_save = str(data.pose.x) + "\t" + str(data.pose.y) + "\n"
file.write(data_to_save)

With this code above you'll be able to create a multi-lines into your file. However, if you call the same program again the data will be overwritten.

If you need: https://www.guru99.com/reading-and-writing-files-in-python.html