Using Python3 how can I split a df with a column of one set of ranges into a df with multiple subranges?

Question

So I have the following:

#this is the data we have
df = pd.DataFrame(data=([\'A\',\'1-50\', 10],[\'B\',\'25-200\', 15],[\'C\',\'25-300\', 5]), columns=[\'Cate