Please help, I left a space between the string and the running_total value but it gave me an error. With the comma there was no error but it tells me that I should print the string Total bill so far: followed by a space and the value of running_total.
It is only necessary to apply the str() method when you concatenate a variable and a string, not when you print and pass the variable as a second argument.
In the future, if you have a question about a specific challenge as it relates to your written code for that challenge and need some help, click the Help button located on the challenge.
The Help button will create a new topic with all code you have written and include a link to the challenge also. You will still be able to ask any questions in the post before submitting it to the forum.