the "hashcharacter "pound""number""sharplines starting with "#are ignored partial lines starting "#are ignored used for annotating scripts pythonin common with most other scripting languagesuses the hash character to introduce comments the hash character and everything beyond it on the line is ignored (strictly speaking the musical sharp character #is not the same as "#but people get very sloppy with similar characters these days this isn' at all relevant to python but the author is an annoying pedant on the correct use of characters and don' get him started on people who use hyphen when they should use an en-dash or em-dash