code this as python coding

Expected Behavior Write a function sum_csv string(csv_string) that behaves as tollows. Its argument csv string is a string of comma-separated values, with each value in the string being a sequence of decimal digits. It returns an integer that is the sum of the numerical values in the string. Examples 1. sum csv string("11,22,33") Return value: 66 (= 11 + 22 + 33) 2. sum csv string("11,22,-33" Return val 01 22 +-33) 3. sum esv_string "976") Return value: 976