使用python将值插入到csv中的特定单元格中

I was wondering if there was a way to insert data into a specific cell of a csv file with python. Lets say I have the variable 'data' and it stores the value "300". How would I add that data to row 3 column 2 in a csv file? Thanks for all your help ahead of time and I appreciate any advice.I was wondering if there was a way to insert da