Ah shoot sorry one more thing. I don't think nested substitution will work (I just did a test locally and it didn't:
```
>>> t = "stuff {author}"
>>> x = "{t} and then more stuff".format(t=t, author='Sarina')
>>> x
'stuff {author} and then more stuff'
```

so I think you'll need to move the formatting of `number`, `title` and `account` to be substituted into `tweet_text` either at L239 or at L241. It might be a bit cleaner at L241, or to make a second line after L239 to do the `.format` (I don't think `.replace().format()` is very clean in the same line)