'get attribute by XPath element

I tried to get this element by XPath and I need to get that number 973660240249897 and this my code

self.driver.find_element(By.XPATH,f'//a[contains(@href,"/reactions/picker/")]').get_attribute('href')

This is the element:

<a href="/reactions/picker/?ft_id=973537850262136_973660240249897&amp;origin_uri=https%3A%2F%2Fmbasic.facebook.com%2Fkazem.mosaad%2Fposts%2F973537850262136%3Fcomment_id%3D973660240249897&amp;av=100011630400830&amp;__tn__=R">تفاعل</a>


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