NOTAMs and METARs are fun, but also the string of characters on a passenger boarding pass, like this one

    M1EWING/SHAUN         E1AAAAA SYDBNEQF 0524 106Y023A0073 359>2180

And for the record, like Python code, the spaces are significant, because the fields have a fixed order and width. (Although there are a couple of places where a field is specified by a number denoting its sized, followed by the contents)