let's assume that program take these variables;

website = "https://stackoverflow.com/questions/"
username = "BestSithInEU"
password = "S0n'X%`2FU`,t!j-" 

My aim that, I want to store these datas with another class;

class forExample:
    self.header = ["website", "username / email", "password"]
    self.data_list = [website, username, password]

    ### And I'm using this method from csv library
    with open("password.csv", "a", encoding="UTF8", newline="") as f:
        writer = csv.writer(f)

        write multiple rows
        writer.writerows(self.data_list)

How can I convert these three variables to list of strings? And also when I use this self.data_list I'm getting this output...

_csv.Error: iterable expected, not NoneType

CodePudding user response：

The csv writer expects a list of lists. So

self.data_list = [ [website, username, password] ]