[Python] python numpy array convert to xml

For example ,there is my data :

import numpy as np
a = np.array([[ 26.2, 280. ],
[ 26.2, 279. ],
[ 26. , 278.8],
[ 25.2, 278. ],
[ 25. , 277.8],
[ 24.2, 277. ],
[ 24. , 276.8],
[ 23. , 276.8],
[ 22.8, 277. ],
[ 23. , 277.2],
[ 23.8, 278. ],
[ 24. , 278.2],
[ 24.8, 279. ],
[ 25. , 279.2],
[ 25.8, 280. ],
[ 26. , 280.2],
[ 26.2, 280. ]])


I want to get a xml flie like this:

<?xml version="1.0"?>
<ASAP_Annotations>
<Annotations>
<Annotation Name="Annotation 0" Type="Spline" PartOfGroup="_1" Color="#F4FA58">
<Coordinates>
<Coordinate Order="0" X="26.2" Y="280." />
<Coordinate Order="1" X="26.2" Y="279. " />
<Coordinate Order="2" X="26." Y="278.8" />
.........
.........
.........
<Coordinate Order="14" X="25.8" Y="280." />
<Coordinate Order="15" X="26." Y="280.2" />
<Coordinate Order="16" X="26.2" Y="280." />
</Coordinates>
</Annotation>
</Annotations>
</ASAP_Annotations>


I know it may be implemented by xml.etree.ElementTree,but I never learn it,could you please tell me how to do it in python.Thank you ~

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