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# ok now what about some performance metrics?
stats = prices.calc_stats()
stats.display()
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<form>
<input type="checkbox" name="option" value="1" onclick="onlyOne(this)"> Option 1<br>
<input type="checkbox" name="option" value="2" onclick="onlyOne(this)"> Option 2<br>
<input type="checkbox" name="option" value="3" onclick="onlyOne(this)"> Option 3<br>
</form>
<script>
function onlyOne(checkbox) {
var checkboxes = document.getElementsByName('option');
checkboxes.forEach((item) => {
if (item !== checkbox) item.checked = false;
});
}
</script>