The function below takes a single string parameter:esvoef6fb6e94cf33c9ebd969 ae0c11bc41e60eb3e74ef8b6b7103474cc9 a544eb0abeovse'. Complete the function to return the netid part of the email address (i. e., the part before the esvoee2d0402c074a0da467686ef48a59b7 a4acf9a125545ff0b8d4bee08128158c29e ovse symbol) as a string. For example, your code should return '' if given the email address above. Hint: to find the end point for slicing either use the find function or use negative indexing.